Test drive new products or discover oldies but goodies during Test Drive Thursdays and save big! One day, twice per month, you'll be able to score amazing deals on awesome products you may not have tried before. Test Drive Thursdays is just another way Chemical Guys is helping you build your detailing arsenal and achieve your brightest shine! Current Promotion: Get 20% off select products in this category only. This discount is not combinable with any other offer and is good for the promotional period only. Good while supplies last on qualified inventory. Subject to change without notice. Deal Ends 5/16/2019 at 11:45 pm PST.