Urgent Gear oil question

Enzeder enzeder at comcast.net
Thu Feb 14 11:52:13 PST 2008

At 10:14 AM 2/14/2008, Brett Dikeman wrote:
>GL4/5 are different performance standards, and while GL5 fluids are (I
>think) always hypoid compatible, so are many GL-4 oils.  You're also
>not using the term "final drive" properly; final drive refers to the
>halfshafts and wheels, not the rear differential or transmission.

According to Bentley, the transmission and final drive are combined 
in one housing (Pg 11 of volume 1).  One assumes your car has a 
rather narrow track.

> >> I am low on gear oil. The Bentley is of no use as usual.
>The Bentley does in fact list the oil specs for both transmission and
>rear differential.

I suppose, but they don't make it easy to find.  Page 11 mentioned 
above states that neither transmission or final drive lubricants need 
to be changed.  Further in, the manual states what to use in the 
transmission ("Gear Oil GL4 SAE 80 or G 50 SAE 75 W-90 (synthetic)"), 
but not the final drive (Volume 2, Pg 34-10-1).

More information about the 200q20v mailing list