I found out on the net,how to restore your black door handle and mirrors,that overtime armorall has turned white. Good old peanut butter.Apply leave on 5 minutes or longer,and wash off.It lasted so far 4 washing,and 6 weeks. To expensive to try on tires. Makes everyones hands smell good too.Just kidding. Peanut Butter,the oils must be good for plastic,I might try peanut oil. Might be cheaper. Nate in TN P.S. Don't use if you expect someone in your car,with allergy to peanut butter.Be neat if a car jacker was allergic.