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3.73 DRW axle gear oil question
Im changing the gear oil out in my DRW rear end.
the axle code shows 61 (3.73 non limited slip).
the guy at NAPA said I needed 75w140 synthetic and 7 pints of it.
He also said the additive isnt needed (or already added) in the oil.
So before I start, will I need 7 pints and is the synthetic 75w140 the proper gear oil for a NON LS rear end?