Hey Scotty I have a 1999 tahoe with 176k. Miles and 1999 silverado with 243k miles.The chassis of both are getting surface rust that is making me really think about fixing the problem since I live a couple miles from the ocean.What do you think about using rust converter primer and painting with linseed oil paint like in the old days? Also tahoe has intermittent SERVICE 4X4 light. Thanks Scotty
I have used linseed oil as undercoating on my fullsize Tbird. The frame had just surface rust, and the result turned out to be nice after 2-3 layers. The rust brown frame become almost black with a waxish feel to it. It needs a touch up from time to time, but is easy to apply. It smells like fries for a week or two after applying the oil.
Thanks for the info Dan.I am trying to learn what the best way to protect from the elements without breaking the bank is,without having problems like a company known as Sinclair undercoating.It was a rubberized spray that would crack after a year or two and seal in the water,accelerating the rust.I am very interested in the oil paint.How durable is the paint? As far as jacking up the frame or similar abrasive forces?
I used raw and boiled linseed oil, the boiled one dries faster. Both penetrates the rust and find its way into cracks etc. It's really easy to apply and does not require a lot of preparations. Surfaces does not need to be perfectly clean, just remove loose rust with a wire brush. It's not that mechanically strong, so it will wear off after a while in wheel wells etc. Jacking up the car goes fine, but if it leaves a mark I just spray some more oil when I'm done. And it will not hide rust like the rubberized coating. I do a touch up once a year to keep it well protected.