2010 Toyota Yaris HB

[JustPassinThru]

Originally Posted by CTScott

Up there rust proofing may not be a bad idea. I have been rebuilding an 07 that lived in Ohio and am pretty amazed as to how much rust there is on the underside. There was one really bad spot where one of the floor plugs was out of position and it allowed the road salt to soak into the padding under the carpet, rusting the area from above and below.

Extended warranties are always a gamble. Theoretically with such a reliable vehicle you should not need it, but being pre-owned, you never know how the original owner treated it.

Does rustproofing a USED car do any good?

It's been years since I've considered Ziebart or Tuff-Kote - which once were the titans of the biz. Mostly, what they did was cause OTHER kinds of rust - their compounds would prevent open surface rust but cause it in crevasses and seams.

At the time (1970s) they wouldn't warranty a job on a car on the road more than three months (some exceptions made on examination). Round about that time polymer coats and hot-dips started making inroads; and both those companies shriveled to irrelevance.

But the point seemed to be, do it new or not at all.