Motor oil viscosity grades explained

SAE engine oil grades are the most common way of specifying engine oil viscosities across petrol and diesel applications. In this video, we explain how to read engine oil grades, and the tests which help distinguish between them.
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[@LubricationExplained]

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[@ryanburbridge]

Still watching your videos. Just forget to comment. Thanks for posting

[@LubricationExplained]

Appreciate that!

[@bentleywoon9956]

Thank you , very helpful..

[@LubricationExplained]

Thanks Bentley! Please let us know if there are any specific topics that you'd like covered in a future video.

[@osahonidehen6810]

Thanks for this knowledge sharing, please any idea an equipment/instrument to determine High temperature high shear viscosity?

[@qaisibrahim5674]

hello,
I noticed in oil recommendations in several brands that oil viscosity for the same engine QR25DE for the same car differs in Brazil (5w-30 and even 5w-40 as alternative) while in Nissan US/Canada it recommends 0w-20 viscosity only,
is it because of the warmer climate or the engine itself has some differences ?

[@sumantamondal8586]

Nice explanation buddy. Please make video on HTHS viscosity also.

[@LubricationExplained]

Will do! There's lots of topics to cover but HTHS is definitely on the list.

[@LubricationExplained]

czcams.com/video/OZhpM2vJhB8/video.html In case you haven't seen it already.

[@HendyTazali]

thanks for this explain, multigrade was not popular in Asia, specially for Marine Diesel Engine, monograde SAE 40 are usually used....crew can't understand SAE 40 for Diesel engine or Marine Engine (high speed, medium speed, or slow speed). Need explain engine oil for Marine Lubricant

[@LubricationExplained]

Marine is a really interesting application - I'll have to start doing a few videos.

[@HendyTazali]

@@LubricationExplained thanks Pak, greeting from Indonesia, stay healthy.

[@LubricationExplained]

@@HendyTazali sama sama! 😊

[@chippyjohn1]

I never understood why engines do not have a pre-lubrication system, for small engines. Large engines do, but cars planes and even most trucks do not. Seems like a logical design option for me.

[@LubricationExplained]

I guess it just adds more complexity. If you look at turbine jacking oil systems for example, they need an entirely separate power supply because the main lube oil pumps are driven by the engine.

[@MrCROBosanceros]

That's exactly what I'm wondering often!

[@acbikeatgmaildotcom]

Engine is more likely to be destroyed by neglect than cold startups, you have your zinc additives for dry starts.

[@PinkFZeppelin]

Toyota hybrids do.

[@ipanmie]

Hi sir, do we need to choose oil grade depending on what climate we live? For example, if the manual said to use 10w30, but we live in a hot climate can we change it to 10w40/10w50?

[@acbikeatgmaildotcom]

I'd go up one grade not 2, I'd be more likely to go up a grade if the engine was worn. A worn engine has bigger gaps and also when a plain bearing is worn, the actual load bearing area drops.

[@mabelcastillo8843]

Maestro LE por favor puede usted, darnos una página de códigos y siglas es decir,el significado de cada expresión en el “lenguaje y términos”,por ejemplo, sae,sp, hths, a3 b4 se bien es harto complejo,quizás podríamos hacernos nosotros mismos una lista y ponernos al día en conocimiento elemental que estamos poniendo dentro nuestros carros, “ aceites vegetales” o aceites que no cumplen los niveles mínimos.!!!???…Gracias!!!

[@LubricationExplained]

Excellent idea! Will start putting one together.

[@AB-dm9yz]

Dear Mr. LE
Please allow me to ask you a stupid question,
Is mixing 1 quartz of engine oil SAE 5w30 and 1 quartz of SAE 5w20 will equals to SAE 5w25
Thank you in advance

[@LubricationExplained]

Hi! Approximately yes? But the challenge is that different oils use different methods to achieve their multigrade viscosity - some will simply use a high VI base oil, others will lean more on viscosity modifiers.

[@AB-dm9yz]

@@LubricationExplained thank you for your reply Sir,

[@romanmesina]

I use mono grade SAE 30 in Florida for over 10 years. My engines run like new even after 200,000 miles. Viscosity Improvers/modifiers are not lubricants.

[@109sssss]

not everybody lives in Florida

[@hussindanial5416]

Why does hot country have winter grade lube oils?

[@KarolosAthens]

Τhe SAE grades in real to convert the Chrono timining scale " cSt " .

[@LubricationExplained]

Got the conversion in this video: czcams.com/video/lahlq9agw54/video.html

[@pedromartinez-jh4vm]

Saludos

[@malisamotnjak1229]

Imam ulje ina ultra garden 4t.sae 30 dali moze u skuter ici

[@spaceygalaxy776]

Woah

[@fabrisoto]

👏🏽👏🏽👏🏽👏🏽👏🏽👏🏽👏🏽👏🏽

[@stagedoger]

You sound like Elon musk

[@michaelgiglio1571]

You talk to slow

[@bobaphat3676]

change the playback speed. It's supposed to be educational.

[@acbikeatgmaildotcom]

~ 'The VI lose their capacity to hold viscosity temporarily in high shear,' more q than answers,
I assumed the numbers meant how long it took for a ball bearing to fall thru' a column of oil?