Rear diff oil quantity

oliverjl · 25-06-19, 12:28 PM

I have changed the oil in the diff on my MB Quattro but it only seems to have taken around 1ltr, the Phil Payne site says 2.2ltrs, am I using the wrong fill point? Ive used the one on the off side of the diff
Thanks

EA262 · 28-06-19, 09:58 AM

This caused me some head-scratching. There's only one fill plug. On my RR the overflow capacity was ~850 mls. I drained and filled a second time to be sure. I think Audi probably changed the rear diff in later models.
http://www.quattroforum.com/index.ph...ar-diff.16157/

QuattroBird · 28-06-19, 07:26 PM

Same for me too with my RR. 1 litre and started to flow out. I purchased 3 litres of Redline GL5 for the 2.2 litres so a couple spare!!
I did note that another data sheet put the coupe quattro at 1 litre and UR at 2.2. As the MB and RR have the same diff with the Torsen change, wonder if the WR is 2.2L and others are 1L with the diff lock added.

oliverjl · 30-06-19, 08:22 PM

Thanks that eases my mind slightly, I was confused, but Ive got 4 litres spare now!!

28-06-19, 09:58 AM	#2
EA262 Grown up member Join Date: Aug 2010 Posts: 24	This caused me some head-scratching. There's only one fill plug. On my RR the overflow capacity was ~850 mls. I drained and filled a second time to be sure. I think Audi probably changed the rear diff in later models. http://www.quattroforum.com/index.ph...ar-diff.16157/

28-06-19, 07:26 PM	#3
QuattroBird Grown up member Join Date: Aug 2018 Posts: 40	Same for me too with my RR. 1 litre and started to flow out. I purchased 3 litres of Redline GL5 for the 2.2 litres so a couple spare!! I did note that another data sheet put the coupe quattro at 1 litre and UR at 2.2. As the MB and RR have the same diff with the Torsen change, wonder if the WR is 2.2L and others are 1L with the diff lock added.

30-06-19, 08:22 PM	#4
oliverjl Grown up member Join Date: Oct 2017 Posts: 59	Thanks that eases my mind slightly, I was confused, but Ive got 4 litres spare now!!