MXD

I don't like grime, grease and dirt but I would rather have that than rust. I buy a new truck about every 10 years so it's worth it to me. By the time 10 years is up, the undercoating has made a HUGE difference.

Half_ton

I used 2 cans of Amsoil mp hd and it covers really well. I think anything is better than nothing at all!