I had 2 buddys that got into a prank war, One used 90w gear lube as an interior protectant on the other ones J10 jeep truck with all black interior, did EVERYTHING, floor mat, seat, headliner, dash and let it set in the summer heat. I'll have to say it looked awesome after the sun melted it in and it flowed out nice, I'll bet it still has that smell in it today.