Motor Oil Info

AMSOIL Synthetic Motor Oil was the first motor oil company in North America to use the NOACK volatility test to measure motor oil quality and performance. Although competing motor oil companies initially paid no attention to NOACK results, the test has since become a critical measurement tool throughout the industry.

Originally developed and used in Europe, the NOACK volatility test determines how much weight an oil loses through volatilization. The more a motor oil vaporizes, the thicker and heavier it becomes, contributing to poor circulation, reduced fuel economy and increased oil consumption, wear and emissions. During the test, the subject oil is heated to 150C for a specified period, causing the lighter oil molecules to boil off. The results are reported in the percentage , by weight, of the oil that evaporates. The LOWER the number, the better the oil resists volatilization. Lucas 10w-30 synthetic rated a 40.47, Royal Purple synthetic 10w-30 rated a 11.20, and AMSOIL synthetic 10w-30 rated a 5.70.