Modern engine designs generate more heat than ever, accentuating the importance of the NOACK volatility test for determining an oil’s ability to provide an adequate level of protection and performance. More horsepower, turbo chargers and aerodynamic styling have created extremely hot environments that receive less cooling from outside air, and high heat leads to oil oxidation, deposits and thickening in conventional oils.
Because AMSOIL synthetic lubricants contain only uniform molecules, they are much more resistant to thermal and oxidative breakdown. AMSOIL synthetic motor oils help keep components free of damaging varnish, deposits and sludge.
To qualify for the current API SM motor oil specification, gasoline motor oils cannot experience a weight loss of more than 15 percent in the NOACK test. AMSOIL synthetic motor oils were exceeding modern requirements over 20 years ago, while many current motor oils still have a hard time meeting this minimal requirement, increasing wear, fuel consumption and emissions.
As seen in the graph, AMSOIL 10W-30 Synthetic Motor Oil (ATM) easily falls below the maximum 15 percent volatilization rate dictated by the API SM motor oil specification.
