Both PPG Envirobase and Aquabase Plus waterborne systems have released a new 1K primer! Just mix 10% by weight with T494 or P980-5000 reducer and go! For use on all popular automotive substrates (properly prepared): steel, aluminum, galvanized, E-coat, existing paint finishes and most plastics. The 10% by weight feature (rather than volume) allows the painter to pre-mix accurately on the paint scale. Under normal drying conditions, it’s sandable in 30 minutes. With no catalyst to buy, it’s user-friendly to the checkbook too! It’s green to use and you get to keep some green afterwards!