Castle® TC-12™ is formulated with a special blend of additives that ensure cleanliness and lubrication of vital automatic transmission parts. TC-12™ works to clean, lubricate, and prevent leaks, while preventing system wear. When transmission fluid is changed, 1/3 of the old fluid is left in the torque converter. To keep the old fluid from contaminating the new fluid, treat with TC-12™ .Compatible with all conventional transmission fluids, full synthetic and synthetic blends. Treats up to 16 quarts.
1. Add each time transmission fluid is changed, or at any time fluid needs topping off.