ZL1 Differential fluid change. - Page 2

ProjectZL1 · 11-14-2019, 08:59 PM

Quote:

Originally Posted by Can'tHave2MuchHP

The eLSD requires a critical additive that is present in the OEM fluid. It's likely this additive that contributes to the higher price of the fluid; this isn't standard gear oil. I know people have purchased an additive on its own and attempted to add it but then there have been cases where it doesn't meld or mix properly. Isn't the extra $10, $20 or even $30 worth it for the peace of mind?

My thoughts exactly. I figured there was something special about the fluid for the ELSD.

Quote:

Originally Posted by harner

I always appreciate a good DIY video. Thanks for contributing to the community.

Thanks brotha!

SJFGTO · 11-15-2019, 07:05 AM

Good video. FWIW, why try and out-think the engineers? They specified a particular fluid for a critical part of the drivetrain. The GM fluid keeps the diff quiet, is clearly engineered for track use, has no history of causing excessive wear or grenading differentials and will never be a reason to deny a warranty claim if there is a drivetrain problem. That is all worth a few “extra bucks” for the relatively few times you ever change your diff fluid.

ProjectZL1 · 11-15-2019, 09:03 AM

Quote:

Originally Posted by SJFGTO

Good video. FWIW, why try and out-think the engineers? They specified a particular fluid for a critical part of the drivetrain. The GM fluid keeps the diff quiet, is clearly engineered for track use, has no history of causing excessive wear or grenading differentials and will never be a reason to deny a warranty claim if there is a drivetrain problem. That is all worth a few “extra bucks” for the relatively few times you ever change your diff fluid.

Thanks man!

ssmofo · 11-15-2019, 11:04 AM

The SS has a diff cooler anyway.

*radz28* · 11-15-2019, 11:04 AM

My compliments to a great video, too. I especially like the flushing.

ProjectZL1 · 11-16-2019, 10:23 AM

Quote:

Originally Posted by radz28

My compliments to a great video, too. I especially like the flushing.

Thanks brotha!

getchapull · 03-30-2020, 10:35 AM

Update:

Changed the tranny fluid and diff fluid this weekend with Royal Purple Sychronmax and the RP 75-90 gear oil with friction modifier added.

Tranny seems to shift a little smoother, happy with the fluid so far.

Differential has not exploded yet. Drove 120 miles yesterday. Will keep my eye on it for any signs of disintegration.

Royal Purple is good stuff and I supported my local bidness.

breakskeet · 03-31-2020, 07:27 AM

Quote:

Originally Posted by getchapull

Update:

Changed the tranny fluid and diff fluid this weekend with Royal Purple Sychronmax and the RP 75-90 gear oil with friction modifier added.

Tranny seems to shift a little smoother, happy with the fluid so far.

Differential has not exploded yet. Drove 120 miles yesterday. Will keep my eye on it for any signs of disintegration.

Royal Purple is good stuff and I supported my local bidness.

Not going to grenade. Nothing to worry about. I've been using RP Synchromax and RP 75W-90 in my ZL1 1LE which is now a dedicated track car with no issues. Car has about 3000 track miles and has run in the high summer heat at Sebring and the high banks of Daytona with zero issues.

Snowwolfe · 03-31-2020, 09:48 AM

Keep an eye on Amazon. Last week picked up 1 qt of the GM fluid for $13. Delivered free under Prime. But watch when you order, some companies charge a high shipping fee.

NorthGeorgia · 03-31-2020, 03:04 PM

If you change diff and trans fluid often ... Load once and crawl under the car once. Also use similar setup (Motiv) for the brake fluid flush and bleed.

h018871 · 03-31-2020, 04:26 PM

ProjectZL1 nice video, thx

20Bluezl1 · 03-31-2020, 08:15 PM

You mentioned you had about 2400 miles I just picked up my 2020 zl1 and have about 3700 miles should I be changing it also? And at what intervals those GM recommend?

Alain · 03-31-2020, 09:35 PM

Quote:

Originally Posted by NorthGeorgia

If you change diff and trans fluid often ... Load once and crawl under the car once. Also use similar setup (Motiv) for the brake fluid flush and bleed.

How do those work when it comes to brake bleeding ?

NorthGeorgia · 04-01-2020, 10:55 AM

I use the Motive brake bleeder - it has a pressure gauge and fitting (cap) that connects to the master cylinder. Add a liter of brake fluid, connect SECURELY to master, pump to 20 psi, then bleed each caliper (upper and lower). Usually have to re-pressurize the bottle a couple of times if flushing versus bleeding. One person 15 minute job. No more stressed wife pumping the brakes and premature pedal release.

Special NOTE 1. De-pressurize bottle before removing from master cylinder.

Special NOTE 2... Test the connection and pressure without fluid. You may have to use the larger extra rubber washer to ensure no leak.

Special NOTE 3 ... Re-read note 1

11-15-2019, 07:05 AM	#16
SJFGTO Oh Oh it's Friday Night! Drives: 2018 ZL1 1LE Nightfall Gray Join Date: Jan 2018 Location: Walton Woods Posts: 1,061	Good video. FWIW, why try and out-think the engineers? They specified a particular fluid for a critical part of the drivetrain. The GM fluid keeps the diff quiet, is clearly engineered for track use, has no history of causing excessive wear or grenading differentials and will never be a reason to deny a warranty claim if there is a drivetrain problem. That is all worth a few “extra bucks” for the relatively few times you ever change your diff fluid. __________________ 2018 Camaro ZL1 1LE NFG; ARH 2” headers, catless mids, ARH full exhaust, Lingenfelter 18% lower pulley, ATI Harmonic Balancer, Roto-fab CAI, EE-catch can, TM ported TB, NX Lid, BMR strut tower brace. Aeroforce dual pod interceptor gauges. Tuned by Vengeance Racing!!! 644 HP @ 6250 rpm / 689 trq @ 3660 rpm Four that wanna own me Two that wanna stone me One says she's a friend of mine...

11-15-2019, 11:04 AM	#19
radz28 Petro-sexual Drives: Ultra-Grin Join Date: Oct 2006 Location: Crazy Coast Posts: 15,186 View My Garage	My compliments to a great video, too. I especially like the flushing. __________________ '20 ZL1 Black "Fury" A10, PDR, Exposed CF Extractor Magnuson Magnum DI TVS2650R // RFBG // Soler 103 // TooHighPSI Port Injection // THPSI Billet Lid // FF // Katech Drop-In // PLM Heat Exchanger // ZLE Cradle bushings // BMR Chassis-Suspension Stuff // aFe Bars // Diode Dynamics LEDs // ACS Composites Guards // CF Dash // Aeroforce // tint // other stuffs

03-31-2020, 09:48 AM	#23
Snowwolfe Drives: CTV5 V Blackwing on order Join Date: Feb 2020 Location: East TN Posts: 431	Keep an eye on Amazon. Last week picked up 1 qt of the GM fluid for $13. Delivered free under Prime. But watch when you order, some companies charge a high shipping fee. __________________ 2022 CT5 V Blackwing with A10 2021 GMC Denali pickup with 6.2 and A10 2017 Ford Expedition

03-31-2020, 03:04 PM	#24
NorthGeorgia Drives: 2018 ZLE, 2023 C8, IMSA MX-5 Join Date: Jul 2019 Location: Lake Lanier GA Posts: 77	If you change diff and trans fluid often ... Load once and crawl under the car once. Also use similar setup (Motiv) for the brake fluid flush and bleed. Attached Images

03-31-2020, 04:26 PM	#25
h018871 Geoff Drives: 2020 ZL1 Green Join Date: May 2013 Location: Houston Posts: 1,719	ProjectZL1 nice video, thx __________________ Having a Blast https://www.camaro6.com/forums/showt...php?p=10741733

11-15-2019, 11:04 AM	#18
ssmofo Drives: Chevy Camaro Join Date: Jul 2019 Location: Dallas Posts: 420	The SS has a diff cooler anyway.

03-30-2020, 10:35 AM	#21
getchapull TEXIT Drives: 2019 ZL1 M6 Join Date: Aug 2018 Location: Republic of Texas Posts: 160	Update: Changed the tranny fluid and diff fluid this weekend with Royal Purple Sychronmax and the RP 75-90 gear oil with friction modifier added. Tranny seems to shift a little smoother, happy with the fluid so far. Differential has not exploded yet. Drove 120 miles yesterday. Will keep my eye on it for any signs of disintegration. Royal Purple is good stuff and I supported my local bidness.

03-31-2020, 08:15 PM	#26
20Bluezl1 Drives: 2020 Zl1 A10 Riverside Blue Join Date: Mar 2020 Location: NJ Posts: 1,218	You mentioned you had about 2400 miles I just picked up my 2020 zl1 and have about 3700 miles should I be changing it also? And at what intervals those GM recommend?

04-01-2020, 10:55 AM	#28
NorthGeorgia Drives: 2018 ZLE, 2023 C8, IMSA MX-5 Join Date: Jul 2019 Location: Lake Lanier GA Posts: 77	I use the Motive brake bleeder - it has a pressure gauge and fitting (cap) that connects to the master cylinder. Add a liter of brake fluid, connect SECURELY to master, pump to 20 psi, then bleed each caliper (upper and lower). Usually have to re-pressurize the bottle a couple of times if flushing versus bleeding. One person 15 minute job. No more stressed wife pumping the brakes and premature pedal release. Special NOTE 1. De-pressurize bottle before removing from master cylinder. Special NOTE 2... Test the connection and pressure without fluid. You may have to use the larger extra rubber washer to ensure no leak. Special NOTE 3 ... Re-read note 1

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