Zl1 Rear End Fluid - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Shark72 · 06-08-2015, 08:15 PM

Draining the factory fill on my ZL1, first time. The owner's manual states the GM Fluid to use but no mention of friction modifier additive. Does the specified GM rear End Fluid contain Friction Modifier? What are you guys using?

CamAnon · 06-08-2015, 08:39 PM

The manufacturer has spent billions of dollars designing vehicles. Billions.

Why not just go with what the manual calls for?

CamAnon · 06-08-2015, 08:56 PM

Sorry, my post wasn't useful....

Manual (page 11.13) says "Rear Differential Fluid Dexron LS Gear 75W-90 (GM Part No. 88862624)"

I'm guessing the LS is the limited-slip.

The othe V8s use something different.

CRF8 · 06-08-2015, 09:14 PM

My SS owners manual lists the friction modifier too, I got both at the Chevy parts counter,

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Shark72 · 06-08-2015, 09:28 PM

Quote:

Originally Posted by CamAnon

Sorry, my post wasn't useful....

Manual (page 11.13) says "Rear Differential Fluid Dexron LS Gear 75W-90 (GM Part No. 88862624)"

I'm guessing the LS is the limited-slip.

Thanks, that's kind of what I was thinking. I will go the dealer tomorrow and buy what is recommended.

Shark72 · 06-08-2015, 09:30 PM

Quote:

Originally Posted by CRF8

My SS owners manual lists the friction modifier too, I got both at the Chevy parts counter,

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My SS 1LE was the same, just not sure about the ZL1.

ZED SLED · 06-09-2015, 11:41 AM

The correct part # for the US is 88862624. In Canada it's the same fluid but the part # is 88862625. It does not require extra friction modifier. After it's done, you might want to take it out to a lot somewhere and do about a half dozen figure 8s at low speed in each direction.

CRF8 · 06-10-2015, 09:16 AM

ZED, is your contention that the ZL1 doesn't need the additive? Or that the SS also doesn't need it?

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Shark72 · 06-10-2015, 09:59 AM

Changed the rear end fluid and look what I found....
This is after 750 miles, bought brand new! the plug on the left is the drain, the one on the right is the fill.

I refilled using the recommended fluid per the owner's manual, it contains the limited slip(friction modifier) no need to add limited slip fluid.
Now the Camaro SS uses a different fluid (part number) and does require adding limited slip fluid, see owners manual.

CRF8 · 06-10-2015, 12:25 PM

Thanks for posting the owners manual page !!

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ZED SLED · 06-10-2015, 01:39 PM

Quote:

Originally Posted by CRF8

ZED, is your contention that the ZL1 doesn't need the additive? Or that the SS also doesn't need it?

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When using AC Delco fluid ZL1 doesn't, SS does. Not sure about aftermarket. I did use Mobil 1 and added FM in my SS, but used AC in the ZL1

CamAnon · 06-10-2015, 04:22 PM

That looks pretty gross, Shark.

We have 500 miles on our LT. I think it's soon time to do the first change.

Shark72 · 06-10-2015, 07:33 PM

Quote:

Originally Posted by CamAnon

That looks pretty gross, Shark.

We have 500 miles on our LT. I think it's soon time to do the first change.

Highly recommend it!

CRF8 · 06-10-2015, 08:31 PM

I was at 8000 and no metal visible

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06-08-2015, 08:15 PM	#1
Shark72 Drives: '16 Z06/Z07, '15 Z/28,1972 Stingray Join Date: Feb 2013 Location: Drivers Seat Posts: 846	Zl1 Rear End Fluid Draining the factory fill on my ZL1, first time. The owner's manual states the GM Fluid to use but no mention of friction modifier additive. Does the specified GM rear End Fluid contain Friction Modifier? What are you guys using? __________________ 2015 Z/28 #642 Black Bad Ass

06-08-2015, 08:56 PM	#3
CamAnon Drives: 2015 1LT Join Date: Mar 2015 Location: Central New York State Posts: 91	Sorry, my post wasn't useful.... Manual (page 11.13) says "Rear Differential Fluid Dexron LS Gear 75W-90 (GM Part No. 88862624)" I'm guessing the LS is the limited-slip. The othe V8s use something different. Attached Images Last edited by CamAnon; 06-08-2015 at 09:27 PM.

06-08-2015, 09:14 PM	#4
CRF8 Scenic City Camaro Drives: 2022 Camaro ZL-1 /1974 Firebird 400 Join Date: Jan 2014 Location: Chattanooga TN Posts: 578 View My Garage	Zl1 Rear End Fluid My SS owners manual lists the friction modifier too, I got both at the Chevy parts counter, Sent from my iPhone using Tapatalk __________________ 2022 Camaro ZL-1, grey 1974 Firebird Formula 400, white https://www.facebook.com/groups/Camaro/ https://www.facebook.com/CRFinTN/?modal=admin_todo_tour

06-09-2015, 11:41 AM	#7
ZED SLED Drives: 2017 Mosaic Bk ZL1 M6 Join Date: Jul 2009 Location: South of Raleigh, NC Posts: 9,622 View My Garage	The correct part # for the US is 88862624. In Canada it's the same fluid but the part # is 88862625. It does not require extra friction modifier. After it's done, you might want to take it out to a lot somewhere and do about a half dozen figure 8s at low speed in each direction. __________________

06-10-2015, 09:16 AM	#8
CRF8 Scenic City Camaro Drives: 2022 Camaro ZL-1 /1974 Firebird 400 Join Date: Jan 2014 Location: Chattanooga TN Posts: 578 View My Garage	ZED, is your contention that the ZL1 doesn't need the additive? Or that the SS also doesn't need it? Sent from my iPhone using Tapatalk __________________ 2022 Camaro ZL-1, grey 1974 Firebird Formula 400, white https://www.facebook.com/groups/Camaro/ https://www.facebook.com/CRFinTN/?modal=admin_todo_tour

06-08-2015, 08:39 PM	#2
CamAnon Drives: 2015 1LT Join Date: Mar 2015 Location: Central New York State Posts: 91	The manufacturer has spent billions of dollars designing vehicles. Billions. Why not just go with what the manual calls for?

06-10-2015, 09:59 AM	#9
Shark72 Drives: '16 Z06/Z07, '15 Z/28,1972 Stingray Join Date: Feb 2013 Location: Drivers Seat Posts: 846	Changed the rear end fluid and look what I found.... This is after 750 miles, bought brand new! the plug on the left is the drain, the one on the right is the fill. I refilled using the recommended fluid per the owner's manual, it contains the limited slip(friction modifier) no need to add limited slip fluid. Now the Camaro SS uses a different fluid (part number) and does require adding limited slip fluid, see owners manual. Attached Images __________________ 2015 Z/28 #642 Black Bad Ass

06-10-2015, 12:25 PM	#10
CRF8 Scenic City Camaro Drives: 2022 Camaro ZL-1 /1974 Firebird 400 Join Date: Jan 2014 Location: Chattanooga TN Posts: 578 View My Garage	Thanks for posting the owners manual page !! Sent from my iPhone using Tapatalk __________________ 2022 Camaro ZL-1, grey 1974 Firebird Formula 400, white https://www.facebook.com/groups/Camaro/ https://www.facebook.com/CRFinTN/?modal=admin_todo_tour

06-10-2015, 04:22 PM	#12
CamAnon Drives: 2015 1LT Join Date: Mar 2015 Location: Central New York State Posts: 91	That looks pretty gross, Shark. We have 500 miles on our LT. I think it's soon time to do the first change.

06-10-2015, 08:31 PM	#14
CRF8 Scenic City Camaro Drives: 2022 Camaro ZL-1 /1974 Firebird 400 Join Date: Jan 2014 Location: Chattanooga TN Posts: 578 View My Garage	I was at 8000 and no metal visible Sent from my iPhone using Tapatalk __________________ 2022 Camaro ZL-1, grey 1974 Firebird Formula 400, white https://www.facebook.com/groups/Camaro/ https://www.facebook.com/CRFinTN/?modal=admin_todo_tour