Zap *STILL* wears Depends
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AUBURN What kind of oil and additive should be used with an Auburn Performance Differential? It is important when installing an Auburn High Performance, Pro Series or ECTEDŽ LOCKER that a high quality non-synthetic 80W90 GL-5 gear oil be used. Treat the oil with Auburn Gear, GM or Ford friction additive. Three ounces of additive treats one quart of oil.Friction additive part numbers:Auburn Gear: 504102GM:1052358 Ford: C8A219B546A