Under Coating

[nonstop]

For those of you that live in the rust belt.

 

What do you use for undercoating?

[GnatGoSplat]

Do not use any hard, tar-based undercoating.  It will trap moisture and promote rust.

I would recommend Waxoyl.  That's what they use in Europe.  You can make your own Waxoyl too (instructions on the web if you do a Google search).

[gmcjoe]

Back in the late 80's I used to spray undercoating on cars, #### that job sucked

 

I live in Michigan and will never have a car undercoated. As Gnat posted, it closes up the factory drain holes and actually traps water. I can't tell you how many 'rustproofed' cars I see with rusted out door skins along the bottom.

 

I just hit the quarter car wash weekly to spray the salt off of the underside of the rig.

 

I say save your $$ for other mods