Mobil Jet Oil 387

ExxonMobil announces that Mobil Jet™ Oil 387 is approved for use in Rolls-Royce M250 and RR300 engines which are most commonly found in helicopters. The Rolls-Royce M250 is one of the most popular turbine engines in the world, with over 170 different helicopter and fixed-wing applications in both civil and military aircraft.