Rear end oil change - Page 2

VT-1LE · 04-30-2021, 12:38 PM

How many miles when you guys did your first oil change? Did you do transmission also or prior? I have an M6

ZX-10R · 04-30-2021, 03:30 PM

Get the diff fluid done early, I would say 1500 miles. You'll surprised how much black goop is on the mag drain plug.

I also use Amsoil Severe Gear with slip lock. Best synthetic diff fluid available based on my research and experience (although I prefer bottle/pump). GM doesn't produce oil, they market a product

https://www.amsoil.com/p/severe-gear-75w-90-svg/

VT-1LE · 04-30-2021, 03:59 PM

Same with the transmission? 1500 miles?

6spdhyperblue · 04-30-2021, 04:03 PM

Quote:

Originally Posted by ZX-10R

Get the diff fluid done early, I would say 1500 miles. You'll surprised how much black goop is on the mag drain plug.

I also use Amsoil Severe Gear with slip lock. Best synthetic diff fluid available based on my research and experience (although I prefer bottle/pump). GM doesn't produce oil, they market a product

https://www.amsoil.com/p/severe-gear-75w-90-svg/

I’d argue that these units are particular to the amount of additive and the original spec fluid is a safe bet. Likely the amsoil oil is better but the amount of additive is the question

Flowtie1 · 04-30-2021, 04:16 PM

Quote:

Originally Posted by 6spdhyperblue

I’d argue that these units are particular to the amount of additive and the original spec fluid is a safe bet. Likely the amsoil oil is better but the amount of additive is the question

Agreed

Vigilante375 · 04-30-2021, 05:19 PM

Quote:

Originally Posted by VT-1LE

Same with the transmission? 1500 miles?

Per the owners manual, you only need to change fluid at the prescribed intervals or after 15 hours of track time

getchapull · 04-30-2021, 07:18 PM

I used the Royal Purple gear oil, prolly gained a horsepower and a torque or two.

LonghornMM · 05-01-2021, 10:31 AM

When changing the rear end oil, is there a limited slip type of additive that is needed, or is it just straight oil?

Vigilante375 · 05-01-2021, 10:49 AM

Quote:

Originally Posted by LonghornMM

When changing the rear end oil, is there a limited slip type of additive that is needed, or is it just straight oil?

The link in post 5 is the recommended oil. It comes with the additive. Just pour the bottle in and nothing else.

I cannot speak on the other oil others are mentioning but the GM recommend oil works very well.

LonghornMM · 05-01-2021, 11:51 AM

Quote:

Originally Posted by Vigilante375

The link in post 5 is the recommended oil. It comes with the additive. Just pour the bottle in and nothing else.

I cannot speak on the other oil others are mentioning but the GM recommend oil works very well.

Thank you.

LonghornMM · 05-01-2021, 11:52 AM

Quote:

Originally Posted by getchapull

I used the Royal Purple gear oil, prolly gained a horsepower and a torque or two.

I've always been a big fan of Royal Purple. What weight did you use and what additive did you use?

ZX-10R · 05-02-2021, 12:05 AM

Royal Purple usually fares the worst in standardized tests. Their gear oil is junk, and so is their motor oil (the filters are good). It's not about what your buddy uses or what GM is marketing, recommendations must be based on science

Yes, this is an Amsoil site, but I've seen these tests performed independently on numerous forums and Amsoil gear oil consistently comes out on top

http://www.syntheticoilhq.com/gearoi...risontest.html

Alain · 05-02-2021, 04:51 AM

I always read that Royal Purple is good quality oil.

breakskeet · 05-02-2021, 07:34 AM

Use Royal Purple gear oil. Over 9000 track miles with it and through several gear oil changes. No metal sludge on the drain plugs anymore.

05-02-2021, 04:51 AM	#27
Alain Drives: 2016 Challenger Hellcat, 2018 ZL1LE Join Date: Dec 2009 Location: Northern NJ Posts: 3,003	I always read that Royal Purple is good quality oil. __________________ 2016 Challenger Hellcat /B5 blue/Sepia interior/Brass Monkey Wheels/ 2018 ZL1 1LE/Red hot 2019 Shellby GT 350R/ Oxford white/ Matte Black Stripes/ Carbon Fiber Dash/ Electronics Package #413

04-30-2021, 12:38 PM	#15
VT-1LE Drives: 2020 2SS 1LE Satin Steel Metallic Join Date: May 2020 Location: Vermont Posts: 121	How many miles when you guys did your first oil change? Did you do transmission also or prior? I have an M6

04-30-2021, 03:30 PM	#16
ZX-10R Drives: 2019 ZL1 Riverside Join Date: Apr 2020 Location: Charlotte, NC Posts: 1,138	Get the diff fluid done early, I would say 1500 miles. You'll surprised how much black goop is on the mag drain plug. I also use Amsoil Severe Gear with slip lock. Best synthetic diff fluid available based on my research and experience (although I prefer bottle/pump). GM doesn't produce oil, they market a product https://www.amsoil.com/p/severe-gear-75w-90-svg/

04-30-2021, 03:59 PM	#17
VT-1LE Drives: 2020 2SS 1LE Satin Steel Metallic Join Date: May 2020 Location: Vermont Posts: 121	Same with the transmission? 1500 miles?

04-30-2021, 07:18 PM	#21
getchapull TEXIT Drives: 2019 ZL1 M6 Join Date: Aug 2018 Location: Republic of Texas Posts: 160	I used the Royal Purple gear oil, prolly gained a horsepower and a torque or two.

05-01-2021, 10:31 AM	#22
LonghornMM Drives: 2020 ZL1 Camaro Join Date: Apr 2021 Location: Deer Park, TX Posts: 23	When changing the rear end oil, is there a limited slip type of additive that is needed, or is it just straight oil?

05-02-2021, 12:05 AM	#26
ZX-10R Drives: 2019 ZL1 Riverside Join Date: Apr 2020 Location: Charlotte, NC Posts: 1,138	Royal Purple usually fares the worst in standardized tests. Their gear oil is junk, and so is their motor oil (the filters are good). It's not about what your buddy uses or what GM is marketing, recommendations must be based on science Yes, this is an Amsoil site, but I've seen these tests performed independently on numerous forums and Amsoil gear oil consistently comes out on top http://www.syntheticoilhq.com/gearoi...risontest.html

05-02-2021, 07:34 AM	#28
breakskeet Kevin Drives: 2018 Callaway Camaro ZL1 1LE Join Date: Apr 2018 Location: Rattlesnake, FL Posts: 321	Use Royal Purple gear oil. Over 9000 track miles with it and through several gear oil changes. No metal sludge on the drain plugs anymore.

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