BCastrol 06674-6PK Syntrax Limited Slip 75W-90 Gear Oil - 1 Quart, (Pack of 6) ReviewbP PP Castrol 06674-6PK Syntrax Limited Slip 75W-90 Gear Oil - 1 Quart, (Pack of 6) PPremium full synthetic for added assurance during extended drain intervalsPImproved thermal stability and excellent shear stability for superior wear protectionPFull compatibility with all conventional and synthetic API GL-5 and MT-1 gear oilsPExceeds API Service GL-5 and MT-1 specificationsP