Same here. GM dealer had the fluid in stock - 2 qts - about $35 IIRC.
How often do you need to change differential oil?
Drifting
Joined: May 2003
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From: Sandy Utah
Change it now. If you do not, you may start hearing strange noises from the back of your vette. It will sound like it is a bad bearing especially in a tight turn. That noise is the limited slip clutches in need of LIMITED SLIP FLUID. I changed mine and replaced the diff lubricant with Mobile 1 lub that has the limited slip fluid already mixed in.
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Won't hurt to change it now - easy to do and not very expensive.
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20 to 25k is the conventional wisdom
Then stick one of these in it
http://www.customcorvetteaccessories...inplugkit.html
Peace
Chip
Then stick one of these in it
http://www.customcorvetteaccessories...inplugkit.html
Peace
Chip
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From: King George VA
I changed the diff fluid in my 02 Z06 at something like 800 miles and now change it about every 8 track days or so. But, mine has been mostly a track car from the start. In what was my daily driver from 06-09, a 2006 CTS-V which essentially a C6 drivetrain (LS2 engine), I changed the diff fluid at 10k miles:
2006 Cadillac CTS-V Used Oil Analysis Factory Fill Differential Fluid
The lab's suggestion was to change the fluid (which I had already done).
I currently use:
AMSOIL Severe Gear Extreme Pressure Synthetic 75w90 (Product Code SVGQT)
This fluid has friciton modifier already in it and extra is not needed for the C5/C5 Z06.
2006 Cadillac CTS-V Used Oil Analysis Factory Fill Differential Fluid
The lab's suggestion was to change the fluid (which I had already done).
I currently use:
AMSOIL Severe Gear Extreme Pressure Synthetic 75w90 (Product Code SVGQT)
This fluid has friciton modifier already in it and extra is not needed for the C5/C5 Z06.
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Joined: Dec 2011
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From: Levittown NY
[/QUOTE]AMSOIL Severe Gear Extreme Pressure Synthetic 75w90[/url] (Product Code SVGQT)
This fluid has friciton modifier already in it and extra is not needed for the C5/C5 Z06.[/QUOTE]
****, I just changed my gear oil yesterday with the Amsoil. I knew it had the modifier in it already but i put a 1/2 bottle of the GM additive just in case so the clutches wouldn't chatter. I guess I'll have to romp on it and make sure im still using both tires.
This fluid has friciton modifier already in it and extra is not needed for the C5/C5 Z06.
[/QUOTE]****, I just changed my gear oil yesterday with the Amsoil. I knew it had the modifier in it already but i put a 1/2 bottle of the GM additive just in case so the clutches wouldn't chatter. I guess I'll have to romp on it and make sure im still using both tires.
