I did this too. Accidently. I changed the oil in my 60, left the drain plug just a hair loose, and took it for a drive down the highway. I was coated from stem to stern in oil.macneill said:they used to spray the underside with used motor oil.
Is Jman your grandpa? Because he recommended the same thing to me a year or two ago.Fearnofish! said:My Grandpa would swear by a mixture of kerosine and heavy weight oil. Like 1:10 or something. He had this pressure sprayer and woudl just coat the whole underneath every fall. Let it dry overnight and other than a bit of oil residue never had any problems. this was Ohio/winter/salt... nuf said.
Damnit, you always post just before I do and ruin my jokes.Jman said:The p.o. did Ziebart--worked great, for the first few years. Then, inevitably, it began to separate from the frame/underbody wherever there was heating/cooling process (near exhaust, in the wheel wells). It wound up trapping a lot of moisture, now I've got rot in some hard-to-reach places. I would NEVER do any of those types of undercoatings.
What I've done since then is the old farmboy method--mix waste oil, ATF, and kerosene in equal parts, spray/brush where needed, let stand overnight (or drive down a dusty road, if you can!). That stuff "creeps" everywhere and seals things up. Of course, if you wash your undercarriage frequently with a detergent (I don't), you need to apply it more frequently.
Good luck. The sad fact is, eventually, all 60s in the northeast will rust to death.