(AP Photo/Republican-Herald, Jacqueline Dormer, File)
(AP Photo/Republican-Herald, Jacqueline Dormer, File)

The feds issue a safety warning: Clean the underside of your car!

FOX News Radio's Kerin McCue explains:

Rock salt!

Very familiar to anyone who lives where it's used in places where there's a lot of snow and ice that needs to be cleared from streets and highways.

Not only does it dirty up the pretty parts of your car in a hurry... it's what it does to the underside of your vehicle that has the National Highway Traffic Safety Administration concerned.

They conducted a five year investigation into why pipes that carry brake fluid were rusting on older model Chevys, Cadillacs, GMC pickups and SUV's.

It turns out the problem wasn't the manufacturers fault -- it was all that road salt that built up inside those vehicles that was never, or rarely ever, washed away!

So listen to your Uncle Sam... And clean your undercarriage!

Kerin McCue, FOX News Radio.