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mikes2 · 17-05-17, 04:47 PM

I always thought it was 75/90 for the box GL4 and 75/80 GL5 for the rear diff.

I've sold my Bentley manual so don't have the info to hand

17-05-17, 04:47 PM	#6
mikes2 4 ring whore! Classic Audi Club Member Join Date: Nov 2007 Location: Polmont Posts: 2,617	I always thought it was 75/90 for the box GL4 and 75/80 GL5 for the rear diff. I've sold my Bentley manual so don't have the info to hand __________________ 1991 90 quattro 20v sport 1991 90 quattro