Changing Rear Differential Fluid - Page 11 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

NLcamaro71 · 04-26-2020, 08:55 PM

Has anyone developed seal leaks after switching to synthetic rear end fluid???

Pearlj10 · 04-27-2020, 09:31 PM

A couple of things. Newer 5th gens had a seal change to allow for the newer diff fluid. You have a 2014 and should have the newer type seal, but check into that. It could have been only the ZL1/1LE that had a seal change to allow for synth.

Also, this is a pretty well documented problem in many makes/models. Synthetic has cleaning agents that may have cleansed away gunk on the seal. Also, Dino oil stops them from leaking since regular oil soaks into rubber, rejuvinates it and causes it to expand ever so slightly. You can try one of the stop leak products for diffs but it’s best to replace seal(s).

Do check to see if your SS has the updated seal if you want to stick with synthetic. If you need to pull the seals it’s not too hard to do. Plus the new seals are easy to seat properly, unlike some “floating” seals I’ve replaced that can be installed to far into the diff. Good luck.

NLcamaro71 · 04-29-2020, 09:26 AM

Thanks Pearlj10!!!

mikeman · 05-01-2020, 05:32 PM

I switched to synthetic on mine and have no leaks.

0stones0 · 01-03-2022, 10:04 AM

Quote:

Originally Posted by HyperV117

Just did this over the weekend (I'm at 35K). You guys weren't kidding, that stuff stinks. Replaced with Amsoil and their additive. I'm not sure how much of this is in my head but it seems smoother especially at low speeds. Good stuff.

I’m looking on Amsoil site and can’t find anything on a separate additive. Could you let me know what you used?

Thanks

SIM GhostrdrZ · 01-03-2022, 06:55 PM

Quote:

Originally Posted by 0stones0

I’m looking on Amsoil site and can’t find anything on a separate additive. Could you let me know what you used?

Thanks

Found this note:

0stones0 · 01-03-2022, 07:35 PM

Quote:

Originally Posted by SIM GhostrdrZ

Found this note:

Much appreciated!

SIM GhostrdrZ · 01-03-2022, 08:00 PM

👍

I run redline in both of my Camaro diffs. I run AMSOil in my tractor and will use it in my Silverado when I change trans and diffs.

0stones0 · 01-03-2022, 08:10 PM

Quote:

Originally Posted by SIM GhostrdrZ

👍

I run redline in both of my Camaro diffs. I run AMSOil in my tractor and will use it in my Silverado when I change trans and diffs.

Running redline in the trans but, picked up OEM ACDelco gear oil and additive for the diff. Was concerned about using synthetic with the older seals (from what I’ve read). Latest stuff is synthetic anyways so, oh well.

04-26-2020, 08:55 PM	#141
NLcamaro71 Drives: 2014 Camaro SS Join Date: Nov 2019 Location: NL, Canada Posts: 4	Synthetic rear end fluid- TSB for seals Has anyone developed seal leaks after switching to synthetic rear end fluid???

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04-27-2020, 09:31 PM	#142
Pearlj10 Drives: 2011 Camaro 2LT Join Date: Oct 2018 Location: Az Posts: 367	A couple of things. Newer 5th gens had a seal change to allow for the newer diff fluid. You have a 2014 and should have the newer type seal, but check into that. It could have been only the ZL1/1LE that had a seal change to allow for synth. Also, this is a pretty well documented problem in many makes/models. Synthetic has cleaning agents that may have cleansed away gunk on the seal. Also, Dino oil stops them from leaking since regular oil soaks into rubber, rejuvinates it and causes it to expand ever so slightly. You can try one of the stop leak products for diffs but it’s best to replace seal(s). Do check to see if your SS has the updated seal if you want to stick with synthetic. If you need to pull the seals it’s not too hard to do. Plus the new seals are easy to seat properly, unlike some “floating” seals I’ve replaced that can be installed to far into the diff. Good luck.

04-29-2020, 09:26 AM	#143
NLcamaro71 Drives: 2014 Camaro SS Join Date: Nov 2019 Location: NL, Canada Posts: 4	Thanks Pearlj10!!!

05-01-2020, 05:32 PM	#144
mikeman Banned Drives: 2015 Camaro Join Date: Aug 2018 Location: My Garage Posts: 1,125	I switched to synthetic on mine and have no leaks.

01-03-2022, 08:00 PM	#148
SIM GhostrdrZ Drives: ‘14 Z/28 ‘14 ZL1 M6 vert Join Date: Jul 2015 Location: Ohio Posts: 1,283 View My Garage	👍 I run redline in both of my Camaro diffs. I run AMSOil in my tractor and will use it in my Silverado when I change trans and diffs.