[Z06] Which Axle Fluid Do I Use??
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Joined: Dec 2009
Posts: 4,194
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From: Lake Havasu City Arizona
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St. Jude Donor '12
If you want to stick with the gm fluid, just go to the dealer and request the correct fluid for your vette. Personally I like the amsoil but to each his own.
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Joined: Aug 2001
Posts: 5,364
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From: King George VA
The LS was developed for the C6 to cure the diff chatter problems they had with the C6 diff, but it is backwards compatible for the C5.
An aftermarket alternative (no extra modifier needed) and what I've been using in mine at the track since 04 (no failures):
AMSOIL Severe Gear Extreme Pressure Synthetic 75w90 (Product Code SVGQT)
An aftermarket alternative (no extra modifier needed) and what I've been using in mine at the track since 04 (no failures):
AMSOIL Severe Gear Extreme Pressure Synthetic 75w90 (Product Code SVGQT)
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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%)
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From: Honolulu HI
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Melting Slicks
Joined: Jun 1999
Posts: 2,263
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From: NJ
Thread Starter
Melting Slicks
Joined: Jun 1999
Posts: 2,263
Likes: 48
From: NJ
The LS was developed for the C6 to cure the diff chatter problems they had with the C6 diff, but it is backwards compatible for the C5.
An aftermarket alternative (no extra modifier needed) and what I've been using in mine at the track since 04 (no failures):
AMSOIL Severe Gear Extreme Pressure Synthetic 75w90 (Product Code SVGQT)
An aftermarket alternative (no extra modifier needed) and what I've been using in mine at the track since 04 (no failures):
AMSOIL Severe Gear Extreme Pressure Synthetic 75w90 (Product Code SVGQT)
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Joined: Aug 2001
Posts: 5,364
Likes: 38
From: King George VA
Just hope it doesn't turn out to be "backwards compatible" like the Dexron VI to Dexron III ....then 2 yrs later the addendum...."EXCEPT in manual transmissions"!http://images.ibsrv.net/ibsrv/res/sr...ilies/ack2.gif
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Thread Starter
Melting Slicks
Joined: Jun 1999
Posts: 2,263
Likes: 48
From: NJ
Good question, but no. The Dexron LS has been out for years now - you should be fine with this fluid. It has the same viscosity but different friction properties than the older version (both are 75w90s). In the case of Dexron III and VI, GM dropped the viscosity of the VI by about 40% - totally different behavior of the fluids. They almost immediately backed off on their recommendation that the VI was backwards compatible for manual trannies.
So what exactly happens (happened) to the C5 guys who put Dex VI in their M6's?!!
