[200q20v] Re: GL4 lubricant choice

C1J1Miller at aol.com C1J1Miller at aol.com
Sat Dec 9 00:48:18 EST 2000

In a message dated 12/8/00 6:48:29 PM Eastern Standard Time, WARATAP at aol.com 

> Mobiltrans SHC® 50
>  Product Description
>  Mobiltrans SHC 50 is a synthetic, heavy-duty SAE 50 gear oil

50w oil is too light for the audi tranny.  Also, you're messing with the 
torque transfer of the torsen, which shares it's fluid with the tranny.  Not 

I wouldn't use a GL-5 fluid on my transmission.

Here's the quote again off Scott Mockry's site...
"Using a good synthetic lubricant in the Quattro transaxle (Manual 
Transmssion/front differential) and in the rear differential is recommended. 
This synthetic fluid improves cold weather shifting tremendously and Audi 
supplied the 5000TQ with synthetic transmission fluid from the factory. 
Redline MT-90 which is a 75W90 GL-4 rated synthetic is a good choice in the 
transaxle. There was a change in the filler plug     location on the 016 type 
Quattro transmissions. Beginning in 9/13/88 the filler hole was raised 15mm 
and the capacity increased to 2.75 qts. and the transmission is full when the 
oil level is 7mm below the lower edge of the filler plug. However, during 
repairs, the transmission can be filled up to the bottom of the filler plug 
hole and this would correspond to filling it with 3.4 qts.

     Some VW and Audi enthusiasts use the Redline MTL (75W/80W) GL-4 
synthetic transmission oil but I don't recommend this lighter weight oil in 
the Audi transaxles with Hypoid ring gear. The front wheel drive VW 
transmissions use a different differential gear arrangement than the Audis 
due to the transverse mounting of the transmission in the VW. The Redline 
75W90 Synthetic Gear Oil is recommended in the Quattro rear differential. Go 
to the Redline Oil  Web page for more details

     I recommend changing the transmission fluid every 30-40k miles, even if 
you are using synthetic fluid, the brass from the synchro wear tends to stay 
suspended in the oil. Changing the fluid every 2-3 years can improve the 
shift quality and remove the metal in the oil."

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