System Oils Veritas® 800 Marine Taro® SpeciVeritas® 800 Marine Oil SAE 30 is a premium crankcase lubricant for slow-speed crosshead diesel engines. Veritas 800 Marine is manufactured from highly refined lubricating oil stocks and has very good anti-corrosion and antifoam properties. The oil has a moderate level of alkalinity to neutralize acidic combustion products that can enter the crankcase.