I have used fluid film in the past for other applications, however I've heard people suggest that it's a great undercoating for vehicles, but I haven't tried it myself. I plan on avoiding any rubber seals, as it states on the can, could cause swelling and any hot exhaust parts.

Have any of you used this as an undercoating? What areas should I concentrate on and what areas should I avoid? I've never done an undercoating before but it doesn't look too too hard.

Thanks in advance.

 

I really don't have to deal with rust where I live, but Fluid Film is a great product.

Check out this video from South Main Auto Repair in upstate New York. Eric O. deals with rust and Fluid Film all the time.