[Z06] fluid swap ????
Thread Starter
Instructor
Joined: Oct 2006
Posts: 167
Likes: 1
From: pine bluff ar
fluid swap ????
ok i just got a 03 zo6..it has 75000 on it and want to do a full fluid swap...my question is what kind and how much of each do i need
i read alot of threads but the all seem to get into a fight about who makes the best and who dont ..so please help me out...
oil
tran
rear diff
i sure im gonna run moble 1 for the oil but not sure on how much i need to buy i would like to do the full synthetic swap thanks
i read alot of threads but the all seem to get into a fight about who makes the best and who dont ..so please help me out...
oil
tran
rear diff
i sure im gonna run moble 1 for the oil but not sure on how much i need to buy i would like to do the full synthetic swap thanks
Drifting
Joined: Apr 2008
Posts: 1,464
Likes: 32
From: Ocala FL
No idea about tranny/diff but manual says 6.5 quarts for oil. I've read numerous threads where guys run 7.0. Manual says add one quart over for track days so that's 7.5 quarts.
I'm currently running around 7 all the time.
I'm currently running around 7 all the time.
Team Owner
Joined: Dec 2008
Posts: 35,874
Likes: 1,600
From: Honolulu HI
4 quarts (1 gal) Trans and 2 quarts diff. My recommendation is Amsoil for these. Just picked some up from forum member "Subdriver"...shipped right to my door and paid less than I did for royal purple off the shelf a couple years ago. 
Tech Contributor
Joined: Jan 2004
Posts: 20,030
Likes: 289
From: Wylie TX --> Less is More, except under the hood !
I wrote a procedure to swap the Diff, and Tranny fluids on my web site.
I plan to do an oil change procedure next time I do mine in the spring. There are a few procedures out there for it though. You will need 6.5 qts to fill it. So buy 7 qts.
Its on my web site..... www.ToqueZ06.com
Scroll to the bottom and click on:
--> C5 6 Speed Manual Fluid change:
--> C5 Rear Differential Fluid change:
Hope this helps.
Toque
I plan to do an oil change procedure next time I do mine in the spring. There are a few procedures out there for it though. You will need 6.5 qts to fill it. So buy 7 qts.
Its on my web site..... www.ToqueZ06.com
Scroll to the bottom and click on:
--> C5 6 Speed Manual Fluid change:
--> C5 Rear Differential Fluid change:
Hope this helps.
Toque
Race Director
Joined: May 2004
Posts: 15,866
Likes: 196
From: PA
I just picked up my 03z last month with 36k on it and changed all 3 fluids. Used Mobil 1 for each. 6.5qts 5w30 for engine, 4 qts ATF for trans, 2 qts of 75w90 plus small bottle of GM LSD additive for rear. All 3 were very easy jobs, I was surprised at how easy the trans and rear were to change, not a hard job at all imo.
I've also done the clutch master cylinder flush/change and the coolant flush. The clutch master cylinder fluid didnt look like it had ever been changed but the coolant looked like it just came out of the bottle. Previous owner must have done it really recently.
I've also done the clutch master cylinder flush/change and the coolant flush. The clutch master cylinder fluid didnt look like it had ever been changed but the coolant looked like it just came out of the bottle. Previous owner must have done it really recently.
Last edited by MY03C5Z; Dec 12, 2011 at 06:07 PM.
Premium Supporting Vendor
Joined: Aug 2001
Posts: 5,364
Likes: 38
From: King George VA
The fluids AMSOIL recommends for your engine oil, tranny and diff:
AMSOIL Signature Series 100% Synthetic 5w30 (Product Code ASLQT) (takes ~ 7 qts)
AMSOIL Torque-Drive Synthetic Transmission Fluid (Product Code ATD1G) (takes ~ 3.5 qts - this is 1 gal size)
AMSOIL Severe Gear Extreme Pressure Synthetic 75w90 (Product Code SVGQT) (takes ~ 1.7 qts)
Note that the Severe Gear comes with friction modifier already in it and adding extra modifier is not normally needed for the C5. I personally have been using the tranny and diff fluid in my 02 Z06 at the track for years without failure, but I use AMSOIL's racing engine oil. That said, I did use AMSOIL's top tier Sig Series 0w30 in my CTS-V (LS-2 engine) while it was my daily driver from 06-09 and I get very low wear metal results with the AMSOIL (Jun 07 sample was M1 5w30, the rest AMSOIL):
Cadillac CTS-V Used Oil Analysis - AMSOIL 0w30
If you do opt for the AMSOIL fluids, more than happy to get them for you at wholesale, about 25% off, via the AMSOIL Preferred Customer Program. Drop me a PM if interested.
MTPZ06 - thanks for the mention!
AMSOIL Signature Series 100% Synthetic 5w30 (Product Code ASLQT) (takes ~ 7 qts)
AMSOIL Torque-Drive Synthetic Transmission Fluid (Product Code ATD1G) (takes ~ 3.5 qts - this is 1 gal size)
AMSOIL Severe Gear Extreme Pressure Synthetic 75w90 (Product Code SVGQT) (takes ~ 1.7 qts)
Note that the Severe Gear comes with friction modifier already in it and adding extra modifier is not normally needed for the C5. I personally have been using the tranny and diff fluid in my 02 Z06 at the track for years without failure, but I use AMSOIL's racing engine oil. That said, I did use AMSOIL's top tier Sig Series 0w30 in my CTS-V (LS-2 engine) while it was my daily driver from 06-09 and I get very low wear metal results with the AMSOIL (Jun 07 sample was M1 5w30, the rest AMSOIL):
Cadillac CTS-V Used Oil Analysis - AMSOIL 0w30
If you do opt for the AMSOIL fluids, more than happy to get them for you at wholesale, about 25% off, via the AMSOIL Preferred Customer Program. Drop me a PM if interested.
MTPZ06 - thanks for the mention!
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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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Thread Starter
Instructor
Joined: Oct 2006
Posts: 167
Likes: 1
From: pine bluff ar
thanks yall for all the input...i went with amsoil an got it from "subdriver" he is a great person to talk to and very helpful... he know his oils...lol thanks again for the help yall are GREAT
Premium Supporting Vendor
Joined: Aug 2001
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From: King George VA