Urgent Gear oil question

LL - NY larrycleung at gmail.com
Thu Feb 14 06:51:02 PST 2008

You need GL4 synthetic. GL5 will reek havoc on your synchros, but it's ideal
for your rear diff.
Ask me how I know (in my pre-list stupor, I put Mobil 1 GL5 in my 200Q,
'twas a BIG mistake,
almost lost my synchros, which would've killed the box, and as far as I was
concerned, the car).
I'm using Redline MT-90 in both the UrS and in my 200 (when I had it) with
good results (it actually
rescued the 200's box!) but just so long as you use GL4 fluid (and the
a synthetic requirement) you should be fine.


On 2/13/08, John S. Lagnese <jlagnese at massed.net> wrote:
> Hi,
> I am low on gear oil. The Bentley is of no use as usual. The owners manual
> also says nothing. What do I need in my 5 speed gearbox for my 91 200 20V
> Quattro? I have 80/90 GL-5.
> John
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