Best Wash for preventing Rust Corrosion for Cargo Van?

[Andyinchville1]

HI,

I know not enviro friendly BUT old school rust proofing was to spray the undercarriage with either diesel or used motor oil....

They repel water and rust does not form....do a couple times during the winter and no rust all...

No need to wash undercarriage at a car wash doing the above.

Andrew

 

[T270_Dreamin]

Maybe that would be a marketable solution in spray cans, hmm or maybe people can just keep buying new vans every 5 yrs to keep the carriers happy and drive without any rust worries.