Royal purple fluids and the ZL1

getchapull · 10-15-2019, 09:03 AM

I am about to change the oil for the 1st time I believe (32% on the oil life monitor) on my 2019 M6 ZL1 with 4k miles. Car was bought used. I will be using the factory fill 0w-40 Mobile 1 ESP with the PF-64 filter.

My question is about the gear oil and tranny fluid. Anyone using RP for diff and tranny fluid? Does this induce the gear groan I have read about or is it hit or miss?

I prefer RP fluids over any others from my personal experience and the RP company is a stones throw from my house and I like to support the local economy when I can.

Comments?

ssmofo · 10-15-2019, 09:16 AM

I just changed my diff fluid at 1500 miles, I used the GM factory fluid, not a fan of RP no real proven data saying its better than the factory stuff. but if you sleep better using it, tear yer ass.

SJFGTO · 10-15-2019, 11:31 AM

Do not try to out think the engineers at GM. Use the factory gear oil. You will gain nothing whatsoever with RP.

Junkyardspecial · 10-15-2019, 12:08 PM

Factory fill here as well. My car sees very hard track usage.

ICTsccaCamaro · 10-15-2019, 12:12 PM

I've only used factory GM fluid for my rear axle and trans.

Mark R · 10-15-2019, 12:52 PM

Ditto on factory fluids.

CAPTRS777 · 10-15-2019, 07:15 PM

ditto. Just changed rear diff factory fluids

getchapull · 10-15-2019, 07:43 PM

Alrighty then... I see the consensus is OEM fluids.

TJay74 · 10-15-2019, 08:12 PM

Quote:

Originally Posted by ICTsccaCamaro

I've only used factory GM fluid for my rear axle and trans.

The transmission is the one area the other fluid companies excel. RP Syncromesh is a way better fluid for the M6 transmission. I had all sorts of issues with the OEM fluid, especially when cold. RP eliminated all of those issues.

getchapull · 10-16-2019, 09:32 AM

Quote:

Originally Posted by TJay74

The transmission is the one area the other fluid companies excel. RP Syncromesh is a way better fluid for the M6 transmission. I had all sorts of issues with the OEM fluid, especially when cold. RP eliminated all of those issues.

Interesting.

scottcolem · 10-25-2019, 11:52 PM

+1 for the RP Syncromesh

Warrior102 · 10-27-2019, 01:17 PM

It's actually Syncromax, +2 for the RP Syncromax for the M6 and this for the rear end, you'll need 2 -> https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Syncromax, get the case it's cheaper than buying singles. -> https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

A pump to get it in there. ->https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

getchapull · 10-28-2019, 07:10 AM

PSA:

So I emailed TREMEC and asked them the proper fill instructions on the TR 6060 tranny and here is the response:

"Hello and thank you for contacting Tremec.

Your trans will take approx 3.84 liters you’ll need to buy 4qts you will use just under 4. Add fluid until it comes out of the side plug and then cap it."

So looks like the GM instructions for refilling to 1/8th inch below the plug is garbage.

10-15-2019, 09:03 AM	#1
getchapull TEXIT Drives: 2019 ZL1 M6 Join Date: Aug 2018 Location: Republic of Texas Posts: 160	Royal purple fluids and the ZL1 I am about to change the oil for the 1st time I believe (32% on the oil life monitor) on my 2019 M6 ZL1 with 4k miles. Car was bought used. I will be using the factory fill 0w-40 Mobile 1 ESP with the PF-64 filter. My question is about the gear oil and tranny fluid. Anyone using RP for diff and tranny fluid? Does this induce the gear groan I have read about or is it hit or miss? I prefer RP fluids over any others from my personal experience and the RP company is a stones throw from my house and I like to support the local economy when I can. Comments?

10-15-2019, 11:31 AM	#3
SJFGTO Oh Oh it's Friday Night! Drives: 2018 ZL1 1LE Nightfall Gray Join Date: Jan 2018 Location: Walton Woods Posts: 1,061	Do not try to out think the engineers at GM. Use the factory gear oil. You will gain nothing whatsoever with RP. __________________ 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...

10-15-2019, 12:08 PM	#4
Junkyardspecial Drives: 2018 ZL1 1LE Join Date: May 2019 Location: South Florida Posts: 438	Factory fill here as well. My car sees very hard track usage. __________________ Subscribe to my Youtube channel! https://www.youtube.com/c/Junkyardspecial Will buy your GoodYear Supercar 3R Take offs!

10-15-2019, 12:12 PM	#5
ICTsccaCamaro ITCRNRS Drives: 2018 ZL1 1LE Join Date: Jun 2012 Location: Wichita KS Posts: 1,575	I've only used factory GM fluid for my rear axle and trans. __________________ 2018 ZL1 1LE Ordered 6/29/17 Built 11/6/17 Delivered 12/7/17, Summit White, PDR, NAV, https://www.youtube.com/c/tylerpotter SOLD: 2014 Summit White 1LE 2SS/RS, Recaros, NPP, NAV, KONI Yellow's SOLD: 2012 Black 2LT/RS, Fully 1LE swapped, Brembo swap

10-15-2019, 09:16 AM	#2
ssmofo Drives: Chevy Camaro Join Date: Jul 2019 Location: Dallas Posts: 420	I just changed my diff fluid at 1500 miles, I used the GM factory fluid, not a fan of RP no real proven data saying its better than the factory stuff. but if you sleep better using it, tear yer ass.

10-15-2019, 12:52 PM	#6
Mark R Drives: 2018 ZL-1 Join Date: Jan 2018 Location: Albuquerque Posts: 948	Ditto on factory fluids.

10-15-2019, 07:15 PM	#7
CAPTRS777 Drives: 18 ZL1 1LE HBM 14 SALEEN 620[S] Join Date: Sep 2019 Location: TN Posts: 51	ditto. Just changed rear diff factory fluids

10-15-2019, 07:43 PM	#8
getchapull TEXIT Drives: 2019 ZL1 M6 Join Date: Aug 2018 Location: Republic of Texas Posts: 160	Alrighty then... I see the consensus is OEM fluids.

10-25-2019, 11:52 PM	#11
scottcolem Drives: 2019 ZL1 Join Date: Nov 2009 Location: Lake in the Hills, IL Posts: 257	+1 for the RP Syncromesh

10-27-2019, 01:17 PM	#12
Warrior102 Drives: 2018 2SS 1LE Black Join Date: Aug 2018 Location: Cape Cod Posts: 638	It's actually Syncromax, +2 for the RP Syncromax for the M6 and this for the rear end, you'll need 2 -> https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1 Syncromax, get the case it's cheaper than buying singles. -> https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1 A pump to get it in there. ->https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

10-28-2019, 07:10 AM	#13
getchapull TEXIT Drives: 2019 ZL1 M6 Join Date: Aug 2018 Location: Republic of Texas Posts: 160	PSA: So I emailed TREMEC and asked them the proper fill instructions on the TR 6060 tranny and here is the response: "Hello and thank you for contacting Tremec. Your trans will take approx 3.84 liters you’ll need to buy 4qts you will use just under 4. Add fluid until it comes out of the side plug and then cap it." So looks like the GM instructions for refilling to 1/8th inch below the plug is garbage.

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