Q: I live in Southern New England and, in the past, I have had problems with undercarriage rust ruining brakes, mufflers and even the frame of the car. I get the same story: Drive it more, keep it ...

We may receive a commission on purchases made from links. For many of us, a car's undercarriage is subject to the old adage: "Out of sight, out of mind." Unfortunately, leaving the undercarriage ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? An ominous brown stain on the fender. A bubble in the paint at the bottom of a door.

If there's one type of lubricant or maybe even a general liquid that's ubiquitous and often believed to be able to fix literally anything, it's WD-40. Although everyone calls it WD-40, that's only the ...