What fluids do you recommend for this?
Premium Supporting Vendor
Joined: Aug 2001
Posts: 5,364
Likes: 38
From: King George VA
The AMSOIL Severe Gear 75w90 comes with friction modifier already in it. I do not add any additional friction modifier and my diff has never chattered. That said, about 5% of my customers do use the additive.
The correct answer is to not use the additive unless your diff chatters, then add a bottle.
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C66 Racing #66 NASA ST2, SCCA T2
AMSOIL Dealer (Forum Vendor)
AMSOIL Preferred Customer Program (Members buy at Wholesale - a savings of about 25%)
C66 Racing #66 NASA ST2, SCCA T2
AMSOIL Dealer (Forum Vendor)
AMSOIL Preferred Customer Program (Members buy at Wholesale - a savings of about 25%)
Melting Slicks
Joined: Mar 2000
Posts: 2,975
Likes: 1
From: Northwest Iowa
Ok sub, you sold me. Is that your site in your profile page? I need to change out both the differential and the tranny. '99 MN6 FRC
So how do I order from you 4 quarts for the tranny and 2 quarts for the diff?
So how do I order from you 4 quarts for the tranny and 2 quarts for the diff?
Premium Supporting Vendor
Joined: Aug 2001
Posts: 5,364
Likes: 38
From: King George VA
AMSOIL has two pricing tiers, retail and wholesale. Dealers and Preferred Customers pay wholesale which is about 25% under retail. It costs $10 to sign up for six months of Preferred Customer program membership, so it is cost effective for most orders.
To order direct from AMSOIL, you can either call: 1-800-956-5695
or order online here: AMSOIL Online Store
Either way you can sign up for the Preferred Customer Program when you order.
As long as you use reference #1206638 when you initially order, my dealership and the forum will be credited with that and all future orders.
AMSOIL product numbers:
Tranny fluid: ATF
Diff fluid: SVG
The hand pump: G2039 also comes in handy.
Please drop me another PM if I can help in any way.
Le Mans Master
Joined: Feb 2002
Posts: 6,937
Likes: 21
From: Waldorf MD
I have a 1998 MN6, I changed to Mobil 1 at about 49,000 miles, shifted better, especially at cold temperatures.
After 51,000 miles with Mobil 1, it started grinding going into sixth gear. I replaced with Amsoil ATD, no more grinding.
I have heard that these transmissions are sensitive to dirty fluid. Amazing that GM says it never needs changed!
After 51,000 miles with Mobil 1, it started grinding going into sixth gear. I replaced with Amsoil ATD, no more grinding.
I have heard that these transmissions are sensitive to dirty fluid. Amazing that GM says it never needs changed!
Intermediate
Joined: Apr 2002
Posts: 45
Likes: 0
From: Deering New Hampshire
Amsoil
I'm thinking about replacing my manual transmission fold too and i have access to a local guy for Amsoil. Do you put ATF (automatic transmission fluid) in a standard? What weight?
Premium Supporting Vendor
Joined: Aug 2001
Posts: 5,364
Likes: 38
From: King George VA
AMSOIL ATF (which I use in my Z06 on the track)
AMSOIL Torque-Drive Synthetic Transmission Fluid
FYI, this can be ordered online to benefit the forum. Info in my signature.
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From: At the beach in little Rhody
Premium Supporting Vendor
Joined: Aug 2001
Posts: 5,364
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From: King George VA
Instructor
Joined: May 2005
Posts: 146
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From: Poulsbo WA
I just got some Amsoil for my diff and tranny from SubDriver...thanks
I then jacked up my car in prepartation for my clutch install tommorrow and got to looking. The tranny says "Tremec" on it. It's a 99. I was thinking the 97-99 M6s were made by Borg-Warner not Tremec. So I'm wondering if my tranny has been replaced....and has the better blocker rings in it.
I then jacked up my car in prepartation for my clutch install tommorrow and got to looking. The tranny says "Tremec" on it. It's a 99. I was thinking the 97-99 M6s were made by Borg-Warner not Tremec. So I'm wondering if my tranny has been replaced....and has the better blocker rings in it.
Premium Supporting Vendor
Joined: Aug 2001
Posts: 5,364
Likes: 38
From: King George VA
I just got some Amsoil for my diff and tranny from SubDriver...thanks
I then jacked up my car in prepartation for my clutch install tommorrow and got to looking. The tranny says "Tremec" on it. It's a 99. I was thinking the 97-99 M6s were made by Borg-Warner not Tremec. So I'm wondering if my tranny has been replaced....and has the better blocker rings in it.
I then jacked up my car in prepartation for my clutch install tommorrow and got to looking. The tranny says "Tremec" on it. It's a 99. I was thinking the 97-99 M6s were made by Borg-Warner not Tremec. So I'm wondering if my tranny has been replaced....and has the better blocker rings in it.
For what's its worth, I've never read that the 97-99 had a Borg-Warner tranny, but maybe I haven't been paying attention.
Le Mans Master
Joined: Feb 2003
Posts: 6,683
Likes: 144
From: Memphis Tennessee
Burning Brakes
Joined: Jan 2004
Posts: 933
Likes: 0
From: Inland Empire CA
All of those are good choices; however, I noticed the smoothest shifting from Redline D4 ATF. Amsoil and Mobil 1 ATF were very close, but I've ran the Redline in two T56s and it's been the smoothest I've used to date.