Quote:
Originally Posted by Suberman
Well, my Subaru dealer had an Impreza displayed on a roll up stand showing the entire underbody. The whole thing is heavily coated in black flexible epoxy paint. That's rustproofing and protection against stone chipping of the underbody.
You cannot see any of the internal rustproofing but it is there.
Good to know Subaru also galvanizes the sheet steel. Porsche and Audi also galvanize their metal. The hood of the Subaru is aluminum and needs no corrosion protection beyond paint.
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Rust proofing also help bolt and fasteners. You don't want to snap bolts and have a hard time changing parts in a few years just for regular maintenance. How many times did I ever snap the 8mm bolt holding the brake line to the strut, or fucked up a sway bar link because the rust took the hex threads away - enough for me to yearly shoot rust check on all the suspension parts and fasteners.