trans fluid
Instructor
Joined: Aug 2010
Posts: 238
Likes: 0
From: Asheboro North Carolina
I've been running Amsoil in mine for about 9 months. I can't say it's better than anything else, but it's certainly not worse.
http://www.amsoil.com/storefront/mtf.aspx
http://www.amsoil.com/storefront/mtf.aspx
Race Director
Joined: Oct 2005
Posts: 11,769
Likes: 175
From: Rolla Missouri
2021 C4 of the Year - Unmodified Finalist
St. Jude Donor '10 thru '25
I've been running Amsoil in mine for about 9 months. I can't say it's better than anything else, but it's certainly not worse.
http://www.amsoil.com/storefront/mtf.aspx
http://www.amsoil.com/storefront/mtf.aspx
Been using that in my '96 without any issues.
Drifting
Joined: Jun 2010
Posts: 1,853
Likes: 8
From: Westerly RI
You could check with Bill Beaudreau at www.zfdoc.com. Don't have his phone # handy, but it is on the website and he is an authority on this trans.
Instructor
Joined: Feb 2010
Posts: 190
Likes: 0
From: KY
Bill Boudreau with ZR51 Performance just told me this for my new trans.
"BMW Castrol TWS 10W-60 full synthetic oil (BMW P/N 07510009420). The factory fill oil is a 5W-30 standard grade motor oil.
WARNING: DO NOT use MOBIL-1 oil in this transmission!"
"BMW Castrol TWS 10W-60 full synthetic oil (BMW P/N 07510009420). The factory fill oil is a 5W-30 standard grade motor oil.
WARNING: DO NOT use MOBIL-1 oil in this transmission!"
Team Owner
Joined: Aug 2005
Posts: 34,988
Likes: 515
From: Riverside County Southern California
Co-winner 2020 C4 of the Year - Modified
2018 Corvette of Year Finalist
2017 C4 of Year
2016 C7 of Year Finalist
St. Jude Donor '09 thru '20
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Le Mans Master
Joined: Apr 2000
Posts: 5,713
Likes: 105
From: Manassas VA
Premium Supporting Vendor
Joined: Aug 2001
Posts: 5,364
Likes: 38
From: King George VA
For those desiring to try the AMSOIL Synthetic Synchromesh Transmission Fluid (MTF) (Product Code MTFQT), please drop me PM so I can ensure you get it at dealer wholesale pricing, about 25% below retail, via the AMSOIL Preferred Customer Program. 
__________________
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: Nov 2008
Posts: 2,765
Likes: 5
If you hang around the racetracks, road race, drag strips, circle dirt
tracks in the pits - hang out with other teams and mechanics,
And take notice of every little detail going on around you at all times like I do..
You find out what works and don't for oils.
Guys here on C4 hate talking about oils for engines, transmissions, and rear differentials.
So I wont give any recommendations today.
If you drive like a little old lady on a Slow Sunny Day Sunday Drive in your Corvette........
Buying expensive oils is a waste of money for you........ Cheapest Trans oils will work just fine for you.
tracks in the pits - hang out with other teams and mechanics,
And take notice of every little detail going on around you at all times like I do..
You find out what works and don't for oils.
Guys here on C4 hate talking about oils for engines, transmissions, and rear differentials.
So I wont give any recommendations today.
If you drive like a little old lady on a Slow Sunny Day Sunday Drive in your Corvette........
Buying expensive oils is a waste of money for you........ Cheapest Trans oils will work just fine for you.
Safety Car
Joined: Dec 2006
Posts: 4,290
Likes: 6
From: St Marys GA
ZFDoc seems to me to be a pretty reputable source, and he recommends the BMW Castrol TWS 10W-60. About $8/qt from any BMW dealership. It's what I used when I changed the trans fluid in my '96, and shifts are smooth!
