Wash the underside? Yes, No?

cdnpont · Canadian Poncho Superstar!

Wash the underside? Yes, No?

hawkeye5766 · Canadian Poncho Superstar!

Personaly I preasure wash the frame when on the hoist, I put the wand in all the frame holes and clean the inside of frame, then wash the outside. Try to get rid of anything that holds moisture. Not used to back east road grime, but from what I've seen from eastern cars out west do all you can!!! Could use a solvent spray gun and coat inside of frame rails, just a thought. I would just wash undercarriage as it is open and should breathe. I take it your not an enviromentalist ( neither am I ) soak in oil to preserve

deleted · Guru

dry sand is not as bad as dirt. Dirt holds moisture and will rust the metal. I still say the cleaner the better, anything that traps moisture is not good. If you think you can do a good job flushing it out then go for it.

Canadian Poncho · A Poncho Legend!

And if you do flush it out, post photos of the finished result

Taylor55 · Poncho Master!

After you pressure wash spray every nut and bolt with fluid film or a similiar penetrating oil. Let the fluid film soak in then do the complete frame and undercarriage with rust check or krown. This product is available at Car Quest in spray bombs at $10.00 a large can. Lightly spray and let soak for a couple of hours and than repeat. The rust check appears to penetrate into the metal and the metal will look like new. Make sure the undercarriage is completly dry and air dry it with your compressor and a blow gun. 5 cans will be sufficient to do the complete undercarriage and it will drip for a couple of days. I have done about 5 vehicles in the past week that are daily drivers and the customers are very satisified with the result. The vehicles I have done are daily drivers that needed about 2 hours of banging with a hammer to knock of the surface rust scale, sand and dirt. I almost fill a 5 gallon pail of dirt when the cleaning is complete.

Al

cdnpont · Canadian Poncho Superstar!

Thanks for the tips. I'm going to do it.

I'll put some grey matting down under the car to catch most of all the grease. I have access to an unlimited amount of the grey stuff like what you'd see under your car carpet. It comes about 3 feet wide. So I'll get about 3 strips about 20 feet long. I used it when I washed my engine bay, and it really worked well.

I have a gallon of pro oilspray and the gun to apply it. But I might just take it back in to a fellow I know who owns Anti Rust oil spray in Burlington. But I won't just soak everything like before.

What kind of soap or solvent do you recommend I pre soak the underside in before the wash? Something bio degradable perhaps?

Taylor55 · Poncho Master!

I've been using purple power degreasing in a one gallon containor. It is not anywhere near as good as a Korkay product I used in the early 70's but I cannot find it anywhere. You can do the rust check yourself as I am really impressed with the way the spray cans work. You do not need a wandthe cans shoot at least 5 feet.

Al

Beaumont67SD · Guru

Yes - power wash the underside and reapply fluid film...great rust inhibitor.

Back in the 1970's, use to get our cars oil undercoated with used motor oil.
The oil spray guy took the $7-10, half assed wiped the front windshield and told you to drive down a gravel road.
- to kick up a lot of dust and seal the oil

After a few years of doing my own auto body work, I thought the dirt on the oil would just hold moisture.
- soon I rejected this bad advice, and my old vehicles lasted longer