Synthetic Tranny Fluid?
Race Director
Joined: Sep 2003
Posts: 13,550
Likes: 6
From: Now in God's Country, the Big Sky, Montana!
Cruise-In 7-8-9-10 Veteran
St. Jude Donor '06-'07-'08-'09-'10-'11-'12
I use Redline ATF D4 in my M6. Takes about 4 quarts. I noticed a little smoother shifting.
Burning Brakes
Joined: Apr 2002
Posts: 798
Likes: 0
From: Manchester NH
Originally Posted by Fat Finger
I'm not sure if I'm reading this right. 
We now use automatic transmission fluid in a manual transmission?
We now use automatic transmission fluid in a manual transmission?
Less viscous and therefore more efficient than traditional manual tranny fluid.
-Pete
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Melting Slicks
Joined: May 2003
Posts: 2,840
Likes: 301
From: Bonita CA
The synthetic tranny fluids disipate heat better. That's the biggest advantage, cooler tranny temps. About 15-20 degrees cooler using Mobil 1. No need to spend more than the cost of Mobil 1. It's about $5 a quart.
Burning Brakes
Joined: Oct 2003
Posts: 816
Likes: 0
From: peabody ma
Originally Posted by topless99
amsoil, and yes i could feel the difference
same with me, had that royal purple oil in it and never really felt a difference, put the amsoil in and it made a significant difference in the feel...
Instructor
Joined: May 2004
Posts: 117
Likes: 0
From: Wheaton il
Amsoil here too
Only 500 miles on my 2004 and the original trans fluid looked bad! After switching to Amsoil noticed a difference. I added a magnetic drain plug and also replaced the rear dif fluid with Amsoil and added another magnetic drain plug. Rear dif fluid looked OK. Now I'm 100% Amsoil and good to go!
Advanced
Joined: Mar 2005
Posts: 73
Likes: 1
From: Dublin CA
Where do you get the magnetic drain plugs?
I'd consider doing that for my oil plug. Sounds like it'd be useful.
-Jason
I'd consider doing that for my oil plug. Sounds like it'd be useful.
-Jason
Originally Posted by cadmanjm
Only 500 miles on my 2004 and the original trans fluid looked bad! After switching to Amsoil noticed a difference. I added a magnetic drain plug and also replaced the rear dif fluid with Amsoil and added another magnetic drain plug. Rear dif fluid looked OK. Now I'm 100% Amsoil and good to go!
Burning Brakes
Joined: Sep 2000
Posts: 806
Likes: 0
From: Baton Rouge LA
Magnetic Drain Plugs
I just bought all three (engine, tranny, diff) for an upcoming fluid change. Ecklers was about $5 more than Mid America. ($37 vs. $32, shipping included)
How much fluid does it take to do the tranny and diff, and do I need any special tools?
How much fluid does it take to do the tranny and diff, and do I need any special tools?