INDUSTRIAL GEAR OILS Our range of gear oils enables equipment operators to select the oil that will deliver optimum value to their operations through enhanced wear protection and long oil life. DIESEL Engine Oil API SpecificationsGEAR Oil API Specifications MINERAL SYNTHETIC BLEND SAE GradesGL-5GL-4GL-3GL-2GL-1EP 90 EP 140 75W90 75W110 80W90 80W140 85W90 85W110 85W140 90W140 80 90 110 140 190 250