> Mobil 1 isn't gear oil it's engine oil. Synthetic gear oil from Mobil is > usually Mobil SHC. Hmm, Mobil's website does not appear to agree with you http://www.mobiloil.com/USA-English/MotorOil/Other_Products/Mobil_1_Fully_Syn thetic_Gear_Lube_75W-90LS.aspx David L