I'm glad there isn't any place of business in Michigan that drills holes in cars for rustproofing purposes anymore! I was told that there is a law against doing that here now. I couldn't find that law, but I did find a law that says they cannot use the old chemicals anymore. So sometime in the last 7 years, the places that do chemical rustproofing had to move on and start using a totally new product. The old one was just really really smelly, and would burn the eyes quickly.
They went to a wax-like chemical now, similar to waxoyl.
And if anyone wants a really easy rust stabilizer, try Permatex 81849 Rust Treatment. Three coats within 6 six minutes and let dry for 24hrs. Then paint with any non-water based paint that will stick to it. Works like a charm. I have spots that I did 3 years ago that are still perfect.
Linseed oil is great if you arn't going to keep your car washed in the winter...but if you do, it's gone by the end of February. And theres still 1.5 months of salt/snow left.
"You have to know the truth, and seek the truth, and the truth will set you free."
On my current vx it had the drill holes and then rust proofing in the panels, and every panel on the car just about had some rust repair, so it really really doesn't work.
To stop corrosion in my wheelwells I always first clean off the rust, apply a sealing paint, then use roofing tar and or rubberized undercoating to cover the entire wheel well. I've never had a problem with rust coming back after this.
On the never-ending quest for better gas mileage...