Max ATF™ Synthetic Multi-Spec Automatic Transmission Fluid (01320) by Royal Purple®. Oil Base: Synthetic. Oil Type: Multi-Spec. Volume: 1 Quart. Quantity: 1 Bottle. Royal Purple® Max ATF® is a synthetic, high performance, automatic transmission fluid. Its high film strength helps to dramatically reduce heat and wear. Automatic transmissions generate a great deal of heat and depend on the transmission fluid for cooling and protection. More than 90 percent of all automatic transmission failures are caused by overheating. A 20 degree Fahrenheit reduction in fluid temperature can double the life of the transmission (Source: Perma Industries Inc.). Max ATF significantly reduces heat to extend the life of your transmission.