Penetrol underbody oiling/rustproofing?

Here in the Northeast road-salt rustbelt, some people extend their vehicle's life by annually spraying the underside and frame with used engine oil, WD40, chainsaw bar oil, or other concoctions.

Recently I have been using "Penetrol," after a friend recommended it. it is sold as an additive for oil paints, but also functions as a metal preserving coating. It goes on wet, dries to a hard film. Seems to work.

Anyone here have experienced opinion of this product, or solid knowledge of other ideas?

 

I just use a leaking rear main seal and D18 yokes for thatR)

 

Use it in paint, helps it lay down, brush marks disappear.

 

Guess I wasn't clear - my question was meant to ask about effective DIY rust-proofing.

 

I asked the same question a while back. The best suggestion I got was to take a cup or so of old motor oil, mix it with a couple pounds of parafin wax and apply liberally to the underside. I know I got the amounts of oil and wax wrong but you get the idea. warm it up in a water bath and spray with a heavy duty sprayer or schultz gun (spelled it wrong). Reapply as needed.

 

Good guess. According to the MSDS from the Flood company, Penetrol is a proprietary blend of heat polymerized linseed oil,naphtha solvent, Stoddard solvent and soya long oil alkyd resin.

Why careful - do you mean the likelihood of spontaneous combustion? Very true, I have seen it happen.

 

But then again, this... from the penetrol fact sheet. http://www.floodaustralia.net/brochures_guides/pdf_files/Penetrol-factsheet.pdf

"Penetrol does not contain linseed or fish oil"

Different formulations?

 

Been using it for years. A friends uncle in North Carolina restored Corvairs and other vehicles for years and swore by it. I like to brush it on but you could use a Shutz gun or similar.

 

I painted my frame with POR-15 and painted the underside of the Tub with a spray on bedliner. Works perfectly, looks even better.

 

"I painted my frame with POR-15 and painted the underside of the Tub with a spray on bedliner. Works perfectly, looks even better. "

They use much road salt when it snows there in Hawaii? ;-)

I've tried POR, but in this case I'm thinking of something that will penetrate crevices, interior spaces, and existing rust scale, etc.

 

Ha! Good point. I had the Jeep in the northeast before I moved to Hawaii and its moving back in about a year. So far the POR-15 has been great.