Here's my oil analysis report on a virgin sample of Mobile 1 5W50 motor oil that I sent to Blackstone for testing. The oil meets API SM, ACEA A3/B3 and A3/B4 and it looks to have an excellent additive package with a good amount of ZDDP, Boron and Moly for anti-wear plus a good dose of Calcium-based detergents and a Total Base Number (TBN) of 13.1. The viscosity of 16.95 cSt @ 100 degrees C makes it a light 50 grade oil.
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