Royal Purple Max ATF is a synthetic, high performance, long life, multipurpose automatic transmission fluid. Recommended for all automatic transmissions requiring FORD Mercon or GM Dexron III transmission fluids. Max ATF is more oxidation stable than other transmission fluids and greatly resists breakdown from heat and loss of proper lubricity. Like all Royal Purple products, Max ATF is fully compatible with, and can be mixed with conventional automatic transmission fluids. . Price equates to $10.75 per quart. 12 Quart Case.