TRIX Tar and Iron Remover 1 Liter Save time by removing tar and iron at the same time! CarPro TRIX is a combination of Iron X plus special chemicals that remove tar and naphtha base components. TRIX degreases the auto surface to prepare it for polishing. After using TRIX, the paint will be impeccably clean. CarPro TRIX Tar and Iron Remover is extremely easy to use. It does the work for you! Just spray it on, wait, and then wipe or rinse it off.