as well as hinges in your gas tank cap, glove compartment, and other doors. Corroded parts are some of the hardest to deal with, but by applying WD-40, you can have them loose in no time.

The gas tank lid really takes abuse, especially in salty environments. A squirt of WD-40 a few times a year prevents rusting. Wipe away any excess to keep it from dripping onto (and damaging ...