7.3 Godzilla Killer......is this really what's causing the Ford Superduty V8 issues?
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- čas přidán 15. 04. 2023
- Had a chance to talk with some Ford Reps in regards to a new common rumor about what's killing the 7.3 Godzilla in the 2021 2022 2020 and up F-250's and F-350's. the Mystical Variable displacement oil pump that ford used. Why would they use somehting like this? Easy answers, watch and see.
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What would you expect Ford to say?
They will never admit flaws, think about the fallout.
It does not matter who makes the parts Ford puts their name on it.
I’m sure that given time this engine will be fine but I refuse to be a beta tester on my dime.
My dad has a 2020 250 3.55 7.3 almost 80k miles. 0 issues been a great truck tows pretty much daily.
I just turned 18K miles on my 2021 F-350 7.3 . Performs awesome so far !
i'm in the same boat on my 2021 F350. About 90% towing a 8400# travel trailer.
If there is this much discussion on this engine already. Then Yes there definitely is a problem. Will all engines have it? Maybe maybe not. But for such a hyped engine. It really is concerning
For reference, I just purchased a 2020 F250 FX4 Super Duty with 59k and 3:55 axles. The dealer just put a new long block in it under warranty. The complaint was a cylinder # 4 misfire which was lifter failure. Hopefully the new 7.3 has updated components. I was definitely aware of these issues before I went truck shopping. I learned from an episode of Cleetus McFarland, that the lifters are interchangeable with the GM LS platform. I was also aware of the variable oil pump. Going by idiot guage, the oil pressure drops at cruise and rpm and increases at idle. Witch makes sense for parasitic drag I guess. In closing as best I can tell the truck was serviced regularly at the selling dealer. I will look into engine hours versus mileage and see if it is within normal limits. Thanks for the follow-up video.
some of the ls motors had lifter issues as well i have an ls3 and when upgrading cam everyone says go aftermarket or ls7 lifters
26k on my 22 f350 with the 7.3, got nothing to say but good things about it . I tow my dump trailer and skid steer , also tons of concrete truck is a beast!
Whate till you get 50,to60.000 this is about when all the truble starts
I have a 2021 7.3 and the motor let go at 24k Ford told the dealer not to open up the motor and send back to Detroit to break it down to see why it failed. The truck developed a knock that got louder. Drained the oil and was full of metal.
Thanks for the info.
I think it’s to thin of oil, we ran 15-40 diesel oil and the truck went 140,000 before it blew up. So I think it’s the oil.
I believe it is the parts, where I work we had problems with our new lift truck, 23 brand new lift trucks and we had 8 of went down with only 200-500 hours on them and all were lifters, they were all chewed up and the rep said they were having lots of these problems during 2020-2021 time period
2020 F550 7.3 cam and lifter failure. 74,000 miles. no warranty help from ford and $10k for new long block installed. Any suggestions to help us recuperate our costs?
I wish the best for Godzilla. I was surprised when he mentioned not being able to idle the newer diesels. I have a 7.3 PS and have no issue when i idle for hours.
The 7.3 POWERSTROKE Has no emissions crap on it
Any diesel *should* not get a lot of idle time or I SHOULD say extended idle time. You can glaze cylinder walls due to lower temperatures.
yes, newer diesels. not your ole 7.3
its the emission junk that kills the idling.
@@adamw.6488 7.3 I dont see them to be so prone to it, but something like a cat 3126, 3406, 3408, internationals 400 series and some cummins engines seem a lot more prone to glazing and then they will lack power, consume oil and have a white haze if its bad enough.
I have a 22 Godzilla in my F-250 and a 6.7 Cummins in my 12 Ram 2500. More than once, I've had to drive the holy hell out of the Ram to get rid of the DPF 100% clogged. Luckily, I haven't had to take it to the dealer for it!.
Well one of our 22 model 450 just lost cyl 7 cam and lifter at 38k miles. They are putting in a whole new motor. I'm not ready to say they caught this early and its now resolved. I'll wait to see if our 23 fleet has issues at similar mileage. I will say in the process of us diagnosing this motor we pulled the valve cover and I can tell you it took a good 30 or 40 seconds before we saw oil moving around the head and rockers. Years ago we would have been covered in oil immediately. I do agree this is likely a surface hardening issue but I wasn't impressed with what this old school mechanic saw in terms of oil volume at idle.
Thanks,that low oil flow says about everything..
I've got a 2022 F250 7.3 crew short bed, drive the heck out of it and at 39k miles so far... no issues. Regular oil changes performed at 5k miles
Hey Steve, What kind of oil and filter are you using?
I had a 2015 F150 with 5.0L and had a lot of vct troubles. I was changing the oil at 6k miles as recommended. Needed a long block at 120k miles. So I ordered a 2022 F250 with 7.3 Godzilla motor. I have driven 13,500 miles. I have no troubles to report. This time around I am changing the oil every 3,000 miles because I learned the long 6,000 mile oil changes caused the failures in my f150 engine. Was using full synthetic too. I just don't believe in these long oil change intervals anymore.
Absolutely 💯....I agree, I'd never do the long oil changes interval...even on all my diesels....I did 5k max, and they were rated 10 to 15k...yikes. you are on the right track doing the 3k
Smart man. These long published intervals are so they can calculate lower total cost of ownership on paper but sacrifice longevity. I change my 5.3 chevy oil at or before the computer says 50 percent, and I've had absolutely no issues with it, including some of the more common ones. Even my duramax and detroit diesel in my freightliner get changed way ahead of schedule.
before computer controls and all the useless junk on new motors there was no problem for any motor (gas or diesel) to idle for hours, longer each day.
Agree with your oil change suggestions. I do 4k max on my gas pickup and 5k to 5500 on my duramax depending on what kind of trips its been on.
Im suspicious that with ford having cam problems and gm having cam and lifter problems, maybe the formulation of this new low emission motor oils may be at fault. Id be tempted to add some old school additives with zddp in the oil. Not sure if that would impact all the emissions stuff but who knows.
I need to idle the new 7.3l while using the pro power on board, that is a big part of using the truck.
Speaking of idle speed, it looks like GM does offer a 1200 rpm high idle speed switch option for the gas engine in the HD trucks according to the option order list, does Ford also offer a high idle switch for their gas engines as well ?.
I have not seen that as an option like in the diesel.
@@automotiveinquiries9673 Ok, and I am only going on what the option list shows on the GM site as it seems to show the option if I choose a gas or a diesel and that is for a 2023 since it won't let me look at 2024 options and if that switch is realty though, that's the question. Perhaps quiz your GM guy on that, if its an actual gas engine option and if you could chose the item on an ordered truck. Honestly have no idea if once a vehicle is ordered if everything is written in stone or if it can be tweaked before its actually built.
I got 30k on a 2021, no issues. I change oil and filter every 5k-7500 too.
The EPA really does screw up everything.
Yeah, I mean the idea of the epa...what it's supposed to do, makes in theory good. But the diesel, def, thing, that's about money and politics. Didn't help anything.
What's happening to the camshaft and lifters is called spalling. Spalling starts as a small crack in the surface of cam or roller and once started there is no reversing it. There are many reasons this could happen including insufficient lubrication, improper break-in, insufficient heat treatment and some others. If the cam starts to spall and break down, it then destroys the rollers or vice versa. So it's hard to say whether it's one or the other or both. My personal hunch is faulty heat treatment. I say that because the new Bronco had a run of bad valves which broke off from faulty heat treatment and of course ruined the engine. It may be that Ford is farming some of this work out and they can't stay on top of quality control. I would really be surprised if this happened from an in house issue. I think there's just too much out sourcing of critical components just to save money probably. We've had Ford blocks for may decades that never did this so the question is why now?
That's bc Ford is all in on esg and doesn't care about quality parts. All they care about is if you recycle or not Believe me I work for a manufacturer that builds the f150 shifters that go flat for Ford.
well my 2021 7.3 f250 at 92,000 miles it happened cam and lifter failure new motor just crazy other than that its a beast and loved it
20201 7.3 f53 rv 17665 miles just lost power at 55 mph went in to limp mode. 3 weeks in shop still do not know wats wrong with it just went out of warranty crap
oil changed at 5000
Dam you get 14mp! I only get 8.5 from my Cab and Chassis. But I do weigh almost 11,000 lbs.
I have a 21’ 7.3 f250 w 23k. I’m averaging around 14 and I use e ou less towing my 8k trailer! One question; are you using full synthetic oil at 5000 mile intervals?
I'm running the synthetic blend Motorcraft. I don't believe it's full synthetic.
I'm in the same boat. 2021 F350 towing a 8400# travel trailer with no issues. I change my oil & filter ~3500-4k miles with synthetic oil. ~90% towing miles.
I’m going to use the ford filter and full synthetic and change at 5k miles! I’m not driving that much( it’s our tow vehicle) so time is more of a factor than wear and tear!
If you get some sort of surgery where they put artificial whatever and it fails, would you want to hear "well, Mr patient, we probably had a bad batch of xyz but it would've been to expensive to throw away the entire inventory"
Not that it’s a big thing but, irregardless isn’t actually a word in most dictionaries. Regardless is the word you want. That ranks up there with unthaw. In fact spell correct doesn’t even recognize irregardless.
How many failures are shitty oil and filter with high change intervals?
There is another youtuber that did a deep dive on this. The consensus was the lifter failure were only seen on commercial trucks that were detuned to 330ish HP and only on the first run of those trucks.
what oil are you running or recommend? just curious?
I always run the manufacturers recommended, and tend to stay with the ford brand or etc. It doesn't hurt to upgrade to full synthetic, but I always change mine at 3500 to 5k and on diesels at 5k. In diesels I do like rotella.
I'm curious about the new 6.8.
2020 F250 XLT 7.3 Godzilla with 16k towing a fifth wheel…….no issue so far.
Look at the number sold vs. how many have issues. I bet you would see a low percentage.
Bought a first yr godzilla. 2020 f250 7.3 Tremor. 37k on mine. No issues to report except the gps doesnt work properly any more. Its ok. Android works way better. Small issue. My research tells me the engine failure rate is about 4%. Peanuts. Of course that isnt comforting to the 4%. Not worried. If it does fail by any small chance then its getting performance upgrades for sure. Nothing wrong with a 900hp and 1000 lb ft tq NA build. Wont even cost that much😊. Easy power out of this 6 cross bolted main, oil piston squirting monster
I've got 75 k hard miles on mine I use the best oil and premium fuel never a issue the more miles I get on her the stronger it runs , sorry about everyone's bad luck mine kicks butt very pleased with it , never go back to another diesel
Agggred
Another damn problem is people thinking going 8-9k on oil changes is acceptable. If you do that shit, you get what you have coming to you.
Now the engine is known for breaking valves. It will get there eventually. Offshore metallurgy isn’t what it should be.
It’s also the machining of the valve seats as much as far as I have heard. Now the 2022 super duty’s in general have some serious quality control issues.
Great video. Just picked up my new 2023 F350 XLT CCLB and the amount of power this truck has over my 3500 6.4 hemi isn’t comparable. I’m blown away. Not to mention the trans shifts so smooth. I’ve seen complaints about the trans shifting hard, but compared to my Ram it’s night and day. Sometimes when my ram downshifted you’d think the whole drivetrain was gonna come apart. Thanks for the video.
No better tranny than zf 8spd. But each they own
The hard shifting is hit and miss. Ive had my first gen 2020 7.3 and the hard shifting occurs on not fully warmed trans under light throttle applications. Such as warming it up till the idle dies down and leaving work in 5 minutes or under
Ford will never share vital information on this failure....not in interviews and all reps and engineers
are micro managed. Everybody cries about certain ram and chevy products not made in the USA but between out sourcing parts and Canada building of motors Ford is no different and perhaps even the best at concealing their little secrets. Lifters fail due to improper lubrication. Improper oil pressure that is just lubrication 101. If you are wondering if I would by the 7.3 or 6.8 to replace my diesel.....the answer is yes, but Ford dont tell me it is not that oil pump. Lifters need a solid oil pressure for longevity. Fix it Ford.
I just got my 2023 F250 7.3 . Should I be worried ? It was built in February.
I doubt it. Nobody really knows, but most reports are saying this issue was mainly in 2020 models and also mainly in box trucks and rv motors. Again, that's what the data is showing that's circulating around CZcams and forums. I've seen people posting about already bringing their 7.3 to 100k miles with no issues. I have a '22 7.3 and really enjoying it so far. I wouldn't worry about it and most of the confirmed problems are coming in around 40k miles which is well within factory warranty. Also, at the end of the day this problem is still way cheaper to fix compared to the problems diesels are having right now. My brother has a '20 350 in the shop waiting for a CP4 pump with an estimated wait time of 6 months... Truck didn't even hit 100k miles yet...
What’s their excuse for the failing 10 speeds or the garbage IMRC manifolds???
That I don't know. We have 10 torqshifts....diesels at work and haven't had any issues with them and all they do is tow, I believe the 6 spd and 10 spd allison is a better transmission still.
nephew has 2020 F350 with the 7.3,, less than 40,000 miles on it, typical cam /lifter failure, Ford essentially told my nephew to get fucked because he didn't have the truck serviced at a "ford" dealer despite having all the maintenance records from his go to local repair/mechanic, he is in process of lining up a lawyer to sue Ford, he has sued Ford once before for a defective 04 F150 that has repeatedly left him and his family stranded due to randomly shutting off in traffic, sometimes in heavy interstate traffic which could have killed them. For him,, he's done with Ford
I don’t think the 7.3 has good oil pressure at idle they should raise it a little test for a few years and see it’s not like increasing the oil pressure at idle is going to mess anything up.
Why would anyone want to be rnd for Ford. They should stop production and fix the problem. But Ford has always push garbage engines on thier costumers. This is going to be another 5.4 watch.
It may affect cafe ratings and these companies no longer build vehicles based on customer want and need, but what washington dictates. We all pay the price
Ordered my 20 F250 KR 7.3 Tremor in October of 19, built early Jan 20. So I probably have one of the earliest 7.3s 31km. no probs to report. Penz 10-30 syn. every 5-6k 4:30 axels perfect match for the 10spd. with 35"rubber and this power plant.
Right there with you. Mine was built Jan 13 2020 same power train no problems love the tremor package
Same. ‘21, 50k, no issues. Love the motor.
Same. My f250 was delivered early Feb of 2020 so it was built sometime in January, its one of the first ones built
So why do you idle?
Here in Colorado my truck sits outside....so I remote start it at 3a.m. before I hit the gym. Then before I leave the gym. Then head home....then remote start it again before I leave for work at 6 and then before I leave work in the winter. I also idle it all over doing my running around town. Just the way I do it.
That oil pressure gauge is BS. If you turn your key to the on position, it reads regular operating pressure. Did that in my 2021 6.2 and my 2022 7.3 does the same thing.
Before engine starts that is just a gauge check function
@@kevinvanlohuizen2709 that might be true, but why doesn't it go from zero to full like some speedometers and tachometers do? Either way I don't trust it. Even after an oil change you theoretically have really low pressure on the first start and you don't see that on these.
It's well known that the "oil pressure gauge" on Fords has just been a fancy idiot light for years. If it drops below ~8psi then the gauge will drop to indicate the problem. The reason it is this way, from what I read researching this years ago, is because many years ago people would watch the gauge and freak out because "the pressure was too low" or "the pressure was too high" when it was just fluctuating around during driving different conditions, but people would bring the cars in complaining of bad oil pressure, which meant wasting money on diagnosis and parts swapping when it was working as designed in the first place.
If I were to get one of these I'd find a way to plumb in and old school mechanical Guage so I know exactly what it's doing.
Ford public beta testing is in full force!
I just lost a 7.3 in a 2023 with a lifter problem it had 9400 miles. I had a 2020 with 7.3 it made it 6000 miles and had to spend 4 months at dealer. The 7.3 is leaving a bad impression on me
That sucks...sorry to hear that.
Curious as to what kind of use yours get like city vs hwy, towing or mall crawling and climate/geography (hot/cold, mountains/desert, etc.). Not insinuating you're doing anything wrong, just curious if there is any pattern of use conditions with the ones that have problems. Really they should work in any condition like the old ones did, but things are so "engineered" (making it just strong enough to last the warranty, but not so strong that it lasts too long or it'll cost too much to build) now that some small variable they missed could cause failures.
Im probly gonna get the 7.3 ferd next. One thing is for sure ford guy WILL NEVER admit flaws! How many recalls now? There are issues but not gonna stop me from buying. Had nothin but good luck with my rams and fords. They all got issues. Nobody beats rams interior and trans. Ford seems to have best gas motor and love alum body over ram.
Did you say trans? 🤣🤣🤣🤣
Toyota just sits back and laughs. They are building reliable trucks while the big 3 are trying to figure out simple things like oiling the cam.
@@ernestjohnson1807 this is very true, however Toyotas have nothing to crow about on the job site, Im currently looking around me and I actually see a Titan XD and like 5000 white Ford HDs, 98% are crewcab longbox, you know, a work truck, not a city dweller truck that might haul 3 rolls of sod on the weekend and probably bottom the suspension out. Toyota around here is basically for hipsters wearing itchy wool shirts and real slick combover haircuts. Alot like Budlite, they think they are something special until someone points out , well your still a dude with an inverted weiner.
Now if Toyota actually built a HD work platform avalable here with their diesel, the big 3 would be fucked overnight. Until then we have to settle on white F350's with the check engine light on.
Kinda reminds me of the cartoon where a Ford owner is handing over wads of cash to his mechanic and telling him hurry up and fix it before my friends find out about it
@@panthermartin7784 The new 8 speed ZF in the 14' up Rams is pretty stout. It's not made by Chrysler, so it doesn't have the Chrysler failures of the past.
Only time will tell.
My 2021 7.3 motor failed at 65,000. Took to dealer $13,700 to fix with reman longblock.
Sorry to hear that. My 22 blew at 6k miles. Delam metal in the oil......the 6.6 l8t we ran, still rolling strong.
Ford have produced so many bad engines in the last 20 years. I used to buy and sell used trucks and the engines used to be so reliable, you never saw a bad one even at the dealer auctions. Then came the variable valve timing, cam phaser issues, eco boost problems and its' been a long time since Ford has had reliable engines in most of their models - I say this a a former die hard Ford fan who no longer buys one. I was really interested in getting aa truck with the 7.3 Godzilla to get way from some of the negatives of diesel ownership, but it is highly ironic after all that was claimed about the longevity of this engine when it was introduced that despite a return to a simpler design and heavy duty components, here we are with numerous failures at low mileage.
There is no such word as irregardless. Just say regardless.
Soooo… thank you for your speculative assumption as to the root cause of 7.3L catastrophic engine failures. Ford knows exactly what’s going on, and should issue a Service Bulletin stating the facts, and remedial actions it’s taking. Full stop!!
they should have went to the tried and true 460.
I would never let any gasoline engine idle for hours even if I have a high idle switch. Diesel on the other hand I would if I had to and I would have a high idle switch on it that's it even have anymore. I'm thinking of the old freightliners I used to drive. Gasoline engines can benefit from Ohio switch to
When I buy a truck I need 200k miles out of it, and can't have engine trouble. It's the only way it matatically makes sense to me.
Looks like my pre-pandemic '19 F250 with the 6.2 is going to be my forever truck. I am not ready to take on the risk of a 7.3 with all the problems.
Gearhead do you own a dog and call it a cat
Ford did extensive testing and engineering on their 6.4L diesel as well. It turned out to be one of the biggest disasters in diesel history. Ford didn't expect responsibility for that.
Ford still hasn't acknowledged the "death wobble"
Issue with their trucks since forever. Why would anyone listen, or belive what Ford says ?? They honestly earned a zero credibility score with customers 🤷♂️. Not to mention their piss poor customer service...
Stop making excuses for them.
Not sure what there is to "acknowledge" about death wobble. It's just behavior inherent in to the design of the steering system. Rams have the same "problem" too, as to larger trucks when the steering racks start getting age, just depending on what steering setup they use. Issues with the 6.4L were because they were more interested in using International's design in the horsepower races with the other manufacturers. International trucks using the 6.4L didn't have issues nearly the rate the Ford trucks did. The way they dealt with it was just abandon it and go with an in-house built engine that didn't try to extract more power out of someone else's design (like the 6.0L and 6.4L). How long has it taken GM to acknowledge lifter failure on engines? How long has it taken for Ram to acknowledge electrical issues on their trucks? Welcome to corporate America, there are no problems just noisy customers.
There's nothing wrong with this engine bullet proof
ford screwed up the eco boost 4 cylinders with the slits between the cylinder this engine has them
also look at how the oil pump is driven
@@jeffparker8268 sure
It’s poor quality oil! I’ve talked to engine builders, and we’ve lost the high oils due to emissions.
Add ZDDP (Zinc) at each oil change. 4 oz.
Works great.
At the cost of your catalytic converters.
Terrible advice
My theory is the failures happen when drivers over-rev their engines. I've seen a number of videos where owners are pushing rev-limiters to red-line, and next thing you know lifters are failing. I never let my rpm's go over about 4k, and never had a problem. And I change my oil every 5,000 miles.
There designed to use don't baby them use good oil and premium fuel
Lots of these high performance engines with all the latest and greatest suffer from reliability issues, asking an engine to do more than it was designed for.
You need to speak up or get a mic and it’s attached to your shirt barely hear you
I can hear fine . Turn your volume up
It's a ford what do people really think lmao
Oil change every 3k miles for me no way I’d go to 5
Won't help erase the Ford. All the maintenance in the world will not fix a bad design.
@@ernestjohnson1807 lol why are you even here?
Ford meeds to get back to basics stop over engineering the vehicles they make!! Would save alot of money!! Wish they would make a Regular cab 4x4 manual transmission Ranger!!!
It's 2023 why do people still act shock about Ford trucks?? You want a real product reliable buy Toyota period!!
Let me know when Toyota makes a truck that I can tow a 16k gooseneck trailer with 😂😂
@@denverbasshead Look at the valve spring issue with the 5.7. Catastrophic failure usually if and when that ever happens.
Boy you are a ford fanboy that loves a ragged ford no matter if it puts you walking get off it and admit ford makes failing engineering in there motor
Lots of manufacturers have had engine failure points. Look at the 6.0 GM. People love that gutless piece of trash because “LS” and “you can mod it.” It runs, but it was a huge fleet flop and we had to work twice as hard to keep them running and had to replace them early because they lived in third at almost redline most of the time. The 5.7 Hemi had the same hype - if you dont mind it living almost at redline and the lifters failing almost as bad as their automatic transmissions they’re fine.
Everything can break.
We dont have to run the Ford engine at redline to tow an 8,000 lb trailer because we have grades. If they blow up, they blow up. Still haven’t had to tow one in 20 years. Can’t say that for the others.
I hate to be the bearer of bad news but you had better get rid of that 7.3 back to the dealer -
It seems that ford has not learned from there bad design of the V6 where head gasket issue was very big and also there 4 cylinder engines as well where They of all things put a small slit between the cylinders for cooling and the head gaskets fail. So be warned and save your wallet Cause it will happen!! Coolant will start causing the issue where it will seep into the cylinder...
here's the proof -czcams.com/video/Z7F7xyYXtGw/video.htmlsi=10Zp5er4DmnJcDTy watch this video and see for yourself...Try and get the word out of this bad design.
Chevy 's are no good either because of the FMS - {fuel management system} - Dodge unknown at this time. You'd be better off getting a Toyota tundra
Hemis have been eating cams since the 5.7 was introduced
I'm curious and not trying to bash you but why do you believe in the engineers in everything else except oil change intervals? I find it hilarious that people are still of the mindset today. Oil has gotten factors better than it was in the 80s. On my 2000 Grand Am GT I changed the oil when the computer indicated, around 7500 miles. It lasted over 200K till I traded it in on my 08 Honda Ridgeline. Same same with the Honda I change it when prompted which is usually at 7500 miles and have never had an engine problem and I have over 227K on it (just waiting on my F 350 to be built now). Again just curious and it isn't just you. Longer oil change intervals save the environment by not having to recycle so much oil, and saves the consumer money on oil changes. One thing my Honda says it to change the oil filter every other oil change but I do it every time, I'm already there.
Totally fair question. I feel it's cheap insurance. Oil change and filter, because of the heat and load. I've had better luck doing this, especially since I've been known to give these, troubled engines, a shot. My 6.0 diesel, 6.4 diesel, now the 7.3. I had absolutely zero issues with this method, as most engine issues come from failed lubrication and parts. Our work trucks at work (not my responsibility to change the oil, I'm a driver) will go 1k to 15k over and no issues. So going with manufacturer recommendations should be good.
Do you really believe changing your oil on a longer interval saves the planet 🤔
Running longer oil changes does save oil but being more conservative with oil change intervals can keep a newer vehicle out of the crusher too. It's cheap insurance to ensure you retain your factory warranty and can keep enjoying your vehicle you paid for with your hard-earned money. Should you change oil at 1k miles? Probably not unless you're idling a lot, but if you're idling a lot you'd go by hours moreso than miles, but 5000-7500 miles (depending on usage) is probably a safer and more logical approach rather than just letting the computer complain when it hits 0% life or going and testing out that Supertech/Castrol/Mobil1 oil's 20k "high-mileage" rating.
stuck oil rings and plugged oil passages. there are many engine failures on extended oil changes. charging oil at 7500 may be ok if you drive 1 hour or more but if you drive 5 miles here and 3 miles there your asking for trouble in any engine
Worst engine ever
Why would anybody buy a Ford anyway ,they've had more recalls that any vehicle in history.
Honestly I don’t know how Ford sells so many trucks the 7.3 diesels were great then they went to the 6.0 junk from factory then 6.4 more worse junk from factory the 6.7 isn’t bad but good lands now problems with the 7.3 gas. I just don’t get the hype from Ford