I have tried just about everything--POR-15,Rustoleum,Rust-Mort,undercoating,driveway sealer,asphalt roof coating,you name it,I brushed it on my truck--they all work well for a few years,but mother nature,calcium cloride road salt,and the clay gooop at the landfill that hardens like concrete all act like battery acid,and peels everything off--and about 5 years later,your looking for another truck thats not as rusty.Its a losing battle around here,trying to keep a rig rust free--the best way I've seen is spraying the entire vehicle underneath and the engine compartment with used motor oil,if you can get it from a diesel engine it stays on longer thanks to all the soot--It makes it messy to work on,(and the EPA doesnt approve)but at least the truck will still be there to fix!.My friends grandmother has a 66 Impala that is still in like new condition bodywise,because the gas station who changed her oil all theese years sprayed the drain oil under the car after each oil change(maybe so they didnt have to pay to get it hauled away?!)and it looks like brand new underneath.Thats what I'm going to do,twice a year drown it with oil--it works great,and its free too! /forums/images/graemlins/crazy.gifI hear linseed oil works too,and it makes mud removal after wheeling much easier,cause it wont adhere to it as well. /forums/images/graemlins/crazy.gif
