BPenzoil Gear Oil 80W-90, 1Qt ReviewbP PP Penzoil Gear Oil 80W-90, 1Qt P"PENNZOIL GEARPLUS" SAE 80W-90 GL-5 GEAR LUBRICANTP1 Qt.PExceeds requirements of API GL-5.POutstanding gear and bearing protection.PIn addition, PENNZOIL� GEARPLUS� SAE 80W-90 GL-5 is fully formulated for all limited slip differentials.