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Car body undersealing

Posted: Sun Jun 25, 2017 1:11 pm
by SuperTom86
Hi folks, just wondering what everyone's opinion is on the best method of underbody and wheel arch rust prevention?

I've seen folk recommend a two stage method, 1st layer being a hard drying underseal then followed by a second layer of waxoil type product which remains slightly soft to absorb stone impacts etc.

Opinions welcome, thanks!

Posted: Sun Jun 25, 2017 3:37 pm
by ATR84
In terms of the arches, also protect them from the inside as they rust from the inside out. This involves stripping out some of the interior and spraying a cavity wax down there, something like dynax s50. For the general underbody underseal, dinitrol comes quite highly recommended.

Posted: Sun Jun 25, 2017 9:40 pm
by wurlycorner
Yes definitely the most important thing on a prelude is to get inside the rear arches and sills with a decent cavity wax - Dinitrol ML or 3125 (ML is slightly more suited to the rear arches but 3125 would be fine)