View Full Version : Undercarriage Wash

Oct 7th, 2012, 06:07 PM
Is there a good process and product to use on undercarriage cleaning? This comes up a lot in northern states, and I was thinking of just using a degreaser like Megs degreaser or Simple Green and spraying lightly with warm water and wiping down with rags.

Any of you have any better tips or products that work best, or what to stay away from?

Oct 7th, 2012, 06:20 PM
Depends how far you want to go...

Some people just park over a sprinkler. I'll go to the coin-op places and spray underneath with the soap, etc.

Oct 8th, 2012, 10:25 PM
In the past I've done the same with just spraying under a bit when at the coin places. But I was thinking of getting further into it, like parking on ramps and crawling under to clean the gunk off better.

Jan 11th, 2013, 06:34 AM
I was going to suggest ramps, but you beat me to it :) Instead of rags though, get a long handled "body brush." The brush will reach into tighter spaces than the rag AND it will help keep you out of range of the dirty water falling from the under carriage. If you can't find a body brush, a large (4") paint brush also works well.

Top Gear
Jun 9th, 2013, 09:01 AM
I've been using wheel cleaner liberally and rinsing off, and that worked fine for a time because the car was brand new. However, now the hard water deposits are building up and it's looking dirty under there even when clean. Maybe a coin-washer is the way to handle it, using their soap and wax settings??

Jun 9th, 2013, 09:18 AM
Simple green is the best product I have found. I spray it on let it sit for a few min and power wash it off.. I don't go any more in depth than that but it works surprisingly well