New L663 Defender steel subframes ‘rust’ prevention and protection solution.

New 2020+ Land Rover Defender has a steel subframes (front and rear) with poor paint and signs of surface rust after 2 months! 1st registered March 2023!
For me on looking at the subframes they are very intricate, being intertwined with multiple mechanical areas underside of the Defender. So I didn’t think spraying everything with wax was the way to go here, as compared to a traditional box ladder chassis or steel monocoque body. Applying Lanoguard or Dinitrol to the areas you want to protect and avoiding everything else won’t be possible resulting in wax coating over everything. ACF 50 is used for motorbikes (originally designed for aeroplanes and boats) precisely because they are complex and giving penetrating protection to areas you can’t see, as much as the areas you can see. ACF covering other areas doesn’t matter and less intrusive than wax alternatives. It’s the areas you couldn’t get to, or might miss with wax I consider as the bigger risk areas (invisible ticking time bomb). Bizarrely, I also like the thought I can quickly and easily ‘top it up’ each autumn (the fall), same time as my motorbikes.

[@robholland1937]

How many cans did you need for the vehicle?

[@cotswoldmusings]

Hi Rob. From memory two cans including dropping down the underside protection to access all areas of front and rear subframes. Will be doing this again in October and every year before road salt risk. 😊

[@robholland1937]

@@cotswoldmusings Cheers. Going to try XCP Rust Blocker on mine. Came out tops on Bennett’s review. Doing it in May when new. I might start a CZcams channel too

[@cotswoldmusings]

@@robholland1937 yes I did see that ……. good plan and let us know YoY 😊

[@pythongrun]

Any reason for choosing ACF50 over Lanoguard? I use ACF50 on my bikes, but am keen to try Lanoguard on my 'dog' car.

[@cotswoldmusings]

Yes, for me on looking at the subframe it is very intricate, being intertwined with multiple mechanical areas of the Defender. So I didn’t think spraying everything with wax was the way to go here, as compared to a traditional box ladder chassis or steel monocoque body. Applying Lanoguard or Dinitrol to the areas you want to protect and avoiding everything else won’t be possible resulting in wax coating over everything. ACF 50 as you know is used for motorbikes precisely because they are complex and giving penetrating protection to areas you can’t see, as much as the areas you can see. ACF covering other areas doesn’t matter and less intrusive than wax alternatives. It’s the areas you couldn’t get to or might miss with wax I consider as the bigger risk areas (invisible ticking time bomb). Bizarrely, I also like the thought I can quickly and easily top it up each autumn same time as the motorbikes.