Originally Posted by JHZR2
Originally Posted by MasterSolenoid
I'm a big fan of OIL undercoating.
I had my vehicle sprayed by a Collision Shop 5 times and now I just touch-up with Fluid Film (aerosol cans) yearly.
Any OIL undercoating is going to creep around the welds & seams and penetrate the current rust down to base metal.
I just bought some Cosmoline and will use it where I don't want a lot of oil.
I think it will work good for 'new' parts I install and under the hood.
Web-Site explaining 3 different types of undercoating
http://www.rtsauto.com/different-ty...plained-which-to-avoid-and-which-to-use/
Undercoating discussions are always interesting.
People have different techniques (wax, oil, tar & washing frequencies)
I would imagine all the vehicles I see on the road (with rust) are Winter cars or have NO undercoating at all.
My best method is:
1) Oil undercoating
2)
In the Fall - Wax AND use a Sealer
Not sure I understand your method. So you spray rustproofing wax in the fall, or wax your paint?
There's quite a few things I'm not sure I agree with in the article you linked to. There's a place for wax and cosmoline type coatings, but they too can allow diffusion of water underneath, and also entrap moisture. Though oils have their drawbacks, it's impractical to think that routine plastic trim removal to do a fully "clean" job of rust protection is practical. Therefore it's next to impossible to think that cosmoline or wax will get into every nook and cranny, so oil is th best hope. A self healing waxy coating with an oil overspray is, IMO, most preferable.
I was referring to the Body/Paint
I have always used an OIL undercoating (Fluid Film) and it can't be beat.
If it causes 'heavy' rust to flake off, they may not be a bad thing. Just touch up every Fall / eventually the rust will stop spreading and falling off.
I bought some Cosmoline (out of curiosity) and may use it in selective areas.