OK, so I used to buy cases of WD40 just to spray inside my wheel wells after I washed my car, to give it that clean "ed" look. I decided today to try something new. I had an empty bottle of Armorall and filled it to 3/4 full with baby oil and the last 1/4 filled with lacquer thinner. I think mineral spirits could work too.. Then I sprayed it inside my wheelwells. It worked great.. It made my wheel wells look shiney and clean. Hope it works out as well for the next person as it did for me.....