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Rear differential oil "weight"

lhrocker
in 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX

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Can I use 80/90 gear oil in the rear diff of my 95 Legacy, or does it have to be 75/90?

Can I use 80/90 gear oil in the rear diff of my 95 Legacy, or does it have to be 75/90?

 

Yes, you can get away with that with no problem. That is only a minor difference in weight, actually.

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