[V8] Hex size and MT-90/MTL

[qshipq at aol.com]

 To the question asked:  Fill plug is a 17mm hex.  Tip:  Take the fill off before the drain.  That way if you end up needing to order/booger the fill plug to get it out, at least you don't 'have' to do it right now!

Allan, MT-90 is indeed GL-4 *and* is a 75w-90 as specified for the Audi manual transmissions
http://www.redlineoil.com/product.aspx?pid=46&pcid=7

MTL is a 70W 80 fluid, which would be a fine substitute if MT-90 is not available.  IME, the MTL is better in cold climes, and is the recommended fluid swap for those manual transmissions operating at higher altitudes.

Given the mileage on most v8 5Speeds, I would opin that either of the above fluids is absolutely fine for Audi Manual Transmissions.  I have found that the MTL tends to have less balky shifts when cold (worn synchros), and consider either of the above to be just fine.

That said, strictly sticking to Audi "Recommended"  MT-90 is the GL-4 75W-90 weight synthetic gear oil specified for the Audi Manual Transmissions.


Scott J


 


 

 

-----Original Message-----
From: allanvega at comcast.net
To: toml99 at todomundo.com
Cc: v8audi <v8 at audifans.com>
Sent: Tue, Aug 10, 2010 7:31 am
Subject: Re: [V8] What size hex on 5-speed tranny filler?


Tom, do you know which redline oil was used to fill you transmission? If you 

used their 75w-90, that's a gl5 and not yellow metal safe (no good for the 

synchros in our cars). The only gl-4 that Redline makes, that I know, of is MTL 

and MT-90 ,neither of which is a 75w-90. (what out manual transmissions call 

for). The only gl-4 fluid that's is both synthetic and correct weight that I 

have been able to find, is the factory fluid (g50) 

----- Original Message ----- 

From: toml99 at todomundo.com 

To: "v8audi" <v8 at audifans.com> 

Sent: Monday, August 9, 2010 11:51:19 PM 

Subject: [V8] What size hex on 5-speed tranny filler? 



Hey, while I was under there today, wanted to check the tranny 

fluid. Car was refilled w/ Redline just before me getting it, and it 

doesn't leak, but just wanted to check it. Assuming I'm going to 

take off the upper hex plug(drivers side) and feel for fluid? I 

didn't possess the large enough hex, and was wondering if anyone 

know's the size?....Tom