Track Day, how to Prep the Z28 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

DonnieDarko94 · 06-11-2016, 09:39 PM

Hi,

I just bought my Z28 about two weeks ago and live in Monterey CA so Laguna Seca is the home track. I had a ZR1 before I owned this car and I have seen the sheet that Chevy includes with the car for suggest before and after track day use. I am familiar with bedding the rotors and burnishing pads.

However, do I really have to change differential fluid after every track day if that car already has 9500 miles on it and is still under factory warranty???

Seems a little excessive, since its just an HPDE.....Please post! My ZR1 seemed to need less work after a track day :( I dont want to tear up my car just want to have some fun.

*mlee* · 06-12-2016, 04:54 AM

That's definitely excessive. I wouldn't go that crazy about changing diff fluid. Depends on how much time you actually get on the track.

DOT4 Brake fluid, and clutch fluid are key as well.

69L48Z27 · 06-12-2016, 06:42 AM

Here's the prep sheet:

http://www.chevrolet.com/content/dam...PREP_Final.pdf

*mlee* · 06-12-2016, 07:31 AM

Quote:

Originally Posted by 69L48Z27

Here's the prep sheet:

http://www.chevrolet.com/content/dam...PREP_Final.pdf

... there you go. I think this is what he's reading.

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Bone Stock · 06-12-2016, 08:27 AM

Speaking of the track, met some guys at Lime Rock Park yesterday...before the rains came...

Synner · 06-12-2016, 09:15 AM

Change it to a high quality synthetic so that it can better handle the heat. It's got a cooler, you don't need to swap it that often unless you're doing a more endurance oriented session.

DonnieDarko94 · 06-13-2016, 10:24 AM

Quote:

Originally Posted by Synner

Change it to a high quality synthetic so that it can better handle the heat. It's got a cooler, you don't need to swap it that often unless you're doing a more endurance oriented session.

I was recommended redline 75-110w think thats too much?

Stephen12ZL1 · 06-13-2016, 12:58 PM

use the GM fluid for our cars...Rear Differential Fluid 75W-90 LimitedSlip:
GM Part No. 88900401. Amazon has it for $21 a quart. Our cars take a little over 1 quart so buy 2.

serviceguy · 06-13-2016, 05:33 PM

After several track days, my car has less than 400 miles. I thought..really I need to change the rear axle fluid already ? . Glad I did ! at 350 miles and several track days the fluid was already discolored. I have not followed the break in period, I believe in drive it like you stole it philosophy. The rear axle fluid will be changed on regular intervals going forward.

JusticePete · 06-13-2016, 07:17 PM

You will run your Z/28 much harder, create much high loads, carry greater speeds into the corner, through mid corner and onto the exit. The Z/28 Torsen differential will put down power hard for you. Change the fluid ;-)

DonnieDarko94 · 06-13-2016, 11:37 PM

Quote:

Originally Posted by JusticePete

You will run your Z/28 much harder, create much high loads, carry greater speeds into the corner, through mid corner and onto the exit. The Z/28 Torsen differential will put down power hard for you. Change the fluid ;-)

all good advice! will do! shouldn't be too difficult to DIY right? or will the computer have a field day with me if I change the fluid myself?

Stephen12ZL1 · 06-14-2016, 05:31 AM

Quote:

Originally Posted by DonnieDarko94

all good advice! will do! shouldn't be too difficult to DIY right? or will the computer have a field day with me if I change the fluid myself?

It is very easy to change the differential fluid. There are two plugs on the drivers side of the differential. Remove the lower plug with a 3/8" socket extension and drain the fluid. There is a fill plug above the drain plug. Use a small piece of rubber hose on the bottle nipple or transfer pump to get the new fluid in the differential. Approximately 1.2 quarts and fill until the fluid weeps out of the fill hole.

JusticePete · 06-14-2016, 07:15 AM

Quote:

Originally Posted by DonnieDarko94

all good advice! will do! shouldn't be too difficult to DIY right? or will the computer have a field day with me if I change the fluid myself?

Quote:

Originally Posted by Stephen12ZL1

It is very easy to change the differential fluid. There are two plugs on the drivers side of the differential. Remove the lower plug with a 3/8" socket extension and drain the fluid. There is a fill plug above the drain plug. Use a small piece of rubber hose on the bottle nipple or transfer pump to get the new fluid in the differential. Approximately 1.2 quarts and fill until the fluid weeps out of the fill hole.

derek1387 · 06-14-2016, 10:00 AM

1. Buy Z28
2.Fill with fuel
3. Bomb to track
4.?????
5. Profit! (AKA, kick some tail)
6. Bomb home!

06-11-2016, 09:39 PM	#1
DonnieDarko94 Drives: 2014 Z28 Join Date: Jun 2016 Location: Chico Posts: 7	Track Day, how to Prep the Z28 Hi, I just bought my Z28 about two weeks ago and live in Monterey CA so Laguna Seca is the home track. I had a ZR1 before I owned this car and I have seen the sheet that Chevy includes with the car for suggest before and after track day use. I am familiar with bedding the rotors and burnishing pads. However, do I really have to change differential fluid after every track day if that car already has 9500 miles on it and is still under factory warranty??? Seems a little excessive, since its just an HPDE.....Please post! My ZR1 seemed to need less work after a track day :( I dont want to tear up my car just want to have some fun.

06-12-2016, 04:54 AM	#2
mlee CamaroFans.com Drives: ZLE & ZR2 Join Date: Oct 2008 Location: Conroe, TX Posts: 37,507 View My Garage	That's definitely excessive. I wouldn't go that crazy about changing diff fluid. Depends on how much time you actually get on the track. DOT4 Brake fluid, and clutch fluid are key as well. __________________

06-12-2016, 08:27 AM	#5
Bone Stock Drives: 2015 Z28 Red Hot #1179 (sold) Join Date: Aug 2013 Location: Bergen county, NJ Posts: 147	Speaking of the track, met some guys at Lime Rock Park yesterday...before the rains came... Attached Images __________________ ‘19 GT350R Oxford White '15 Z28 Red Hot #1179 (sold) '14 ZL1 Summit White, Recaros, 6M (sold)

06-13-2016, 12:58 PM	#8
Stephen12ZL1 Drives: '21 ZLE A10 Join Date: May 2012 Location: Mechanicsville, VA Posts: 6,809	use the GM fluid for our cars...Rear Differential Fluid 75W-90 LimitedSlip: GM Part No. 88900401. Amazon has it for $21 a quart. Our cars take a little over 1 quart so buy 2. __________________ '21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60' '17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold) Last edited by Stephen12ZL1; 06-13-2016 at 01:13 PM.

06-13-2016, 05:33 PM	#9
serviceguy Drives: 2014 Z/28 # 89, 69 Camaro, 2013 ZL1 Join Date: Jul 2013 Location: Flint MI Posts: 669	After several track days, my car has less than 400 miles. I thought..really I need to change the rear axle fluid already ? . Glad I did ! at 350 miles and several track days the fluid was already discolored. I have not followed the break in period, I believe in drive it like you stole it philosophy. The rear axle fluid will be changed on regular intervals going forward. Last edited by serviceguy; 06-13-2016 at 08:34 PM.

06-12-2016, 06:42 AM	#3
69L48Z27 Drives: 2015 Z/28; 1969 Camaro SS Join Date: Nov 2015 Location: York, PA Posts: 805	Here's the prep sheet: http://www.chevrolet.com/content/dam...PREP_Final.pdf

06-12-2016, 09:15 AM	#6
Synner Drives: cars Join Date: May 2011 Location: Oversneeze Posts: 4,544	Change it to a high quality synthetic so that it can better handle the heat. It's got a cooler, you don't need to swap it that often unless you're doing a more endurance oriented session.

06-13-2016, 07:17 PM	#10
JusticePete Drives: Camaro Justice Join Date: Jun 2007 Location: Virginia Posts: 20,174	You will run your Z/28 much harder, create much high loads, carry greater speeds into the corner, through mid corner and onto the exit. The Z/28 Torsen differential will put down power hard for you. Change the fluid ;-)

06-14-2016, 10:00 AM	#14
derek1387 Drives: 2015 1LS Red V6 Join Date: Aug 2015 Location: St Joseph, MO Posts: 1,849	1. Buy Z28 2.Fill with fuel 3. Bomb to track 4.????? 5. Profit! (AKA, kick some tail) 6. Bomb home! __________________ Sponsors: Overkill Motorsport BCS Auto JacFab Machining APDEG Dream Gear Mobile Audio Thanks to Will @ Overkill Motorsports, Jason @ JacFab, Jim @ Ohio Speed, Brandon at Dream Gear, and the boys at Randy Curnow Chevrolet 5th Gen V6 Performance Facebook Group