Gear Lube for mdl 80 diff??

[Al S]

The owners manual call for GL-5
Al

-----Original Message-----
From: John McMahon [mailto:jfm at nts-online.net]
Sent: Saturday, September 17, 2005 1:24 AM
To: Al S
Subject: Re: Gear Lube for mdl 80 diff??


You can use 90W, Al.  You really don't need the multi-viscosity oil since
your climate is temperate.  However, I am a believer in the use of synthetic
gear oil, and that typically comes in 75W90 or 75W140.  You don't need the
latter, in my opinion.  Does the owner's manual call for GL-4 or GL-5?
John McMahon
Abilene, Texas
1990 Coupe quattro 20V
----- Original Message -----
From: "Al S" <streichea001 at hawaii.rr.com>
To: "Quattro" <quattro at audifans.com>
Sent: Saturday, September 17, 2005 4:58 AM
Subject: Gear Lube for mdl 80 diff??


> My manual says 90W gear oil. I would like to use Amsoil synthetic, but not
> sure if I should use the 75W-90 or 80W-90. Average year round temps are
> 75-94, so I don't need a lube for cold weather. I an leaning toward the
> 80W-90 because of the heat/freeway traffic, etc. but I don't want to
> sacrifice any mileage.
>
> TIA
>
> Al Streicher
> '90 80 Non-Q BLK
> Mililani, HI
>
> BTW, dealer shop charge $145 per hour.
>
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