What transmission fluid?
My car will hit 100k soon and I want to do a transmission fluid change. Just wondering what everyone on here has had luck with and recommends.
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1999 Chevrolet Corvette V8-5.7L VIN G
Vehicle Level Maintenance Fluids Fluid - A/T Technical Service Bulletins A/T - DEXRON(R) VI Fluid Availability
A/T - DEXRON(R) VI Fluid Availability
Bulletin No.: 04-07-30-037B
Date: June 12, 2006
INFORMATION
Subject:
Release of DEXRON(R) VI Automatic Transmission Fluid (ATF) (Dex VI is full Syn)
Models:
2007 and Prior Passenger Cars and Light Duty Trucks
2003-2007 HUMMER H2
2006-2007 HUMMER H3
2005-2007 Saturn Relay
2005 and Prior Saturn L-Series
2005-2007 Saturn ION
2005-2007 Saturn VUE with 4T45-E
2005-2007 Saab 9-7X
Except 2007 and Prior Chevrolet Aveo, Epica, Equinox, Optra
Except 2007 and Prior Pontiac Torrent, Vibe, Wave
Except 2003-2005 Saturn ION with CVT or AF23 Only
Except 1991-2002 Saturn S-Series
Except 2007 and Prior Saturn VUE with CVT, AF33 or 5AT (MJ7/MJ8) Transmission Only
Supercede:
This bulletin is being updated with the 2007 model year. Please discard Corporate Bulletin Number 04-07-30-037A (Section 07 - Transmission/Transaxle).
DEXRON(R)-VI ATF
General Motors Powertrain has recently upgraded to DEXRON(R)-VI ATF with the start of 2006 vehicle production.
Only 2005 and prior models that currently use DEXRON(R)-III may use DEXRON(R)-VI as a replacement.
All 2006 and future models that use DEXRON(R)-VI are to be serviced with DEXRON(R)-VI fluid only.
DEXRON(R)-VI is an improvement over DEXRON(R)-III in the areas shown.
2006-2007 Transmission Fill and Cooler Flushing
Some new applications of the 6L80 six speed transmission will require the use of J 45096 - Flushing and Flow Tester to accomplish transmission fluid fill. It is highly recommended that the clean oil reserve of the machine be purged of DEXRON(R)-III and filled with DEXRON(R)-VI.
Parts Information
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Vehicle Level Maintenance Fluids Fluid - M/T Specifications Fluid Type Specifications
Fluid Type Specifications
Transmission Fluid Dexron III
1999 Chevrolet Corvette V8-5.7L VIN G
Vehicle Level Maintenance Fluids Fluid - M/T Specifications Capacity Specifications
Capacity Specifications
Transmission Fluid 3.8L (4.1 Qt)
The Best of Corvette for Corvette Enthusiasts
Valvoline Dex/Merc ATF
Valvoline MaxLife Dex/Merc ATF
Pennzoil Multi-Vehicle ATF
Quaker State ATF
Chevron MD-3
According to their individual websites, all the above are Dexron III compatible. It should also state on the bottles.
Early years (1997-2000) C5s have paper blocker rings and can not use Mobil 1 ATF.
I put Amsoil ATD1G in my 1998 and it has been great. It costs about $44 plus shipping for a one gallon jug.
Synthetic ATF shifts better, especially when cold.
AMSOIL Torque-Drive Synthetic Transmission Fluid (Product Code ATD1G)
The tranny will take about 3.5 quarts, so a one gallon jug works well.
And for the DIYer:
AMSOIL Hand Pump (Product Code G2039)
Note: I recommend taking the plastic tip off the end of the fill tube as it is not needed and might come off.


C66 Racing #66 NASA ST2, SCCA T2
AMSOIL Dealer (Forum Vendor)
AMSOIL Preferred Customer Program (Members buy at Wholesale - a savings of about 25%)
AMSOIL Torque-Drive Synthetic Transmission Fluid (Product Code ATD1G)
The tranny will take about 3.5 quarts, so a one gallon jug works well.
And for the DIYer:
AMSOIL Hand Pump (Product Code G2039)
Note: I recommend taking the plastic tip off the end of the fill tube as it is not needed and might come off.

Early years (1997-2000) C5s have paper blocker rings and can not use Mobil 1 ATF.
I put Amsoil ATD1G in my 1998 and it has been great. It costs about $44 plus shipping for a one gallon jug.
Synthetic ATF shifts better, especially when cold.
Date: November 21, 2007
INFORMATION
Subject:
Release of DEXRON(R)-VI Automatic Transmission Fluid (ATF)
Attention: DEXRON(R)-VI Automatic Transmission Fluid (ATF) is the only approved fluid for warranty repairs for General Motors transmissions/transaxles requiring DEXRON(R)-III and/or prior DEXRON(R) transmission fluids.
Supercede:
This bulletin is being revised to update model/model year information. Please discard Corporate Bulletin Number 04-07-30-037C (Section 07 - Transmission/Transaxle).
MANUAL TRANSMISSIONS/TRANSFER CASES and POWER STEERING
The content of this bulletin does not apply to manual transmissions or transfer cases. Any vehicle that previously required DEXRON(R)-III for a manual transmission or transfer case should now use P/N 88861800. This fluid is labeled Manual Transmission and Transfer Case Fluid. Power Steering Systems should now use P/N 9985010 labeled Power Steering Fluid.
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