Changed the Diff and M6 trans fluid today...

[FirstLSK]

Well, I went by the book for the entire break-in period. Oil changed at 60, 500, and now 1550 miles on the ODO. Along with the oil I also changed the fluids in the rear differential, and tremec 6060 transmission.

Based on all of the metal particles, I would strongly suggest that you change these fluids around 1500 miles.

I wanted to see both the big pieces and the little pieces so I strained the fluids with clean white T-shirts. The rear diff. has magnets on both the drain and fill plugs. Both of them had large blobs of metal shavings on them. I took a picture of a plug after it was cleaned for comparison. The diff fluid looked like a liquid metal due to all of the small particles. New, the fluid is perfectly clear. The T-shirt had quite a bit of large shavings too. Definately NOT something you want to keep running on IMHO.

The Tremec wasn't as bad. Very few large particles. The fluid, however looked like I had a tub of RJT paint.

Pictures attached.


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[GQ4Life]

thats not good.. im do same thanxs

[Legend]

I've done the oil as the manual states but not the differential yet...car has not been driven though more than a few miles since early August...once I get her back the differential will be done along with the tranny and oil again.

Thanks for the pics and post...just reminds me I need to get this done!

[RS/SS]

OK, I've looked over the owners manual and for the life of me I can't find this info you guys are reffering to. Is this in the owners manual and if so what page? Or is this in the service manual?

[superstockcam]

Weird, I have not seen anything like this coming out of my car??? engine was done @ 500 and 1500 non detergent, 3000 standard oil, trans and diff today @ 3500 both clean as a whistle, a little on the magnet but nothing like I see in the pics.
________
Vaporizer Guide

[FirstLSK]

Originally Posted by RS/SS

OK, I've looked over the owners manual and for the life of me I can't find this info you guys are reffering to. Is this in the owners manual and if so what page? Or is this in the service manual?

Look at page 8-16 and 8-17 for the break in information. I am not going to be racing my car but with as much power as the LS3 has, it's impossible not to peg out the @$$ dyno every now and again. Beyond that, I was a jet mechanic for 4 years (USAF) and an auto mechanic for 5. Changing out these fluids is a very good practice for someone who demands longivity and sustained tight tolorances out of their vehicle.

Originally Posted by superstockcam

Weird, I have not seen anything like this coming out of my car??? engine was done @ 500 and 1500 non detergent, 3000 standard oil, trans and diff today @ 3500 both clean as a whistle, a little on the magnet but nothing like I see in the pics.

Having these particles is nothing to be afraid of. They should be there on a new car. If you didn't see them then that just means you didn't look closely enough or that yours isn't finished breaking in yet. Remember, I used white T-shirts to intentionally show the particles. A new manufactured transmission and differential will always make these particles. It is a part of the natural break in process where the gears will lap together and remove the machined texture on the contact portions of the gear teeth.

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[SleepWarz]

I'll be doing this next spring.

round 6000 miles.

[wullger]

I'll keep this in mind; I have about 3200 miles on my L99, and took it in for its first oil change today.

[2SSjack]

Just did my engine and trans at 1445 miles. Motor oil looked great! Also did the M6 tranny. No major surprises. I did strain the old fluid thru a paint strainer/filter(same as for a spray gun); no issues!. Filled w/8qts. Mobil 1 5W-30; trans w/Mobil ! Synthetic ATF, Dexronn III spec. I SWEAR after about 25-30 miles the tranny did free-up a little! Plan to do rear tomorrow; also w/Mobil Synthetic plus GM additive.

[Michael_Js]

FYI: The fill & drain nuts are taken out with the end of a 3/8" ratchet! Torque: 24 lbs. Easy change to do, even with the Zoomer's exhaust!

Thanks again!
Michael J.

[canadian ss]

Why didn't you use GL-5 fluid. You wouldn't have needed the additive. The GL-5 exceedes 75-90/additive combo. The GM parts counter should of told you that. 75-90/additive is old news. Great for live axle 3-4 gen f-bods. You could use either one, but the GL-5 is newer technology.

[canadian ss]

2010 Chevrolet Camaro | Camaro (VIN F) Service Manual | Driveline/Axle | Rear Drive Axle | Specifications | Document ID: 2214285
--------------------------------------------------------------------------------

Lubrication Specifications
Capacities Application
Quantity

Metric
English

Synthetic Differential Lubricant GL-5 75W90 G/M P/N 89021677 (Canadian P/N 89021678)

Note: The following is for vehicles equipped with the Limited Slip Differential option. The Limited Slip Additive container capacity is greater than the amount needed. Only add the amount specified, 0.075 L (2.6 oz.).

Limited Slip Differential Lubricant Additive. Refer to Adhesives, Fluids, Lubricants, and Sealers.

For vehicles equipped the Limited Slip Differential
1.0 L
1.1 Qt

For vehicles not equipped with the Limited Slip Differential
0.9 L
1.0 Qt

© 2009 General Motors. All rights reserved.

[canadian ss]

Just checked our parts dept. and the bottle says GL-5 on it.

[OUR72GTO]

I sent mine out for analysis. Came back clean as a whistle at 3000 miles. Sodium was detected. No metals.