LOOK....LML Gear oil Change - Page 3 - Chevy and GMC Duramax Diesel Forum
Drivetrain Discussion on gearing, CV joints, driveshafts, axles, brakes, etc.

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Old 02-25-2013, 12:28 PM   eBay Motors  #21 (permalink)
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that is nothing to worry about, after my jeep regear with locker and 500 miles the fluid was blackish green sludge and smelled gross. All gears have to break in. I was told that factory gears are not cut as aggressive plus use softer metal as compared to aftermarket ones that is why they don't require break in. Sounded good to me. I have seen guys break brand new aftermarket gears that didn't break them and just went out and flogged on them and boom!!!
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Old 02-25-2013, 01:26 PM   eBay Motors  #22 (permalink)
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Quote:
Originally Posted by The S.O.M. View Post
When I changed the diff fluids on my truck the front fluid looked like coffee creamer, I have no clue when the last time it was changed was, But I'm glad I did it soon after I bought the truck!
it probably had water in it
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Old 02-26-2013, 06:42 PM   eBay Motors  #23 (permalink)
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Changed mine after the first 600 miles of towing - milky gray - gear break in.
Changed again a year later to put on a new diff cover and it was clean/clear.
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Old 02-26-2013, 06:47 PM   eBay Motors  #24 (permalink)
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i checked mine yesturday and it looked the same as buddy picture... will be changing mine this weekend, how many quarts does the rear diff take? also whats everyone one using or recommend mobil 1 or amsoil?
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Old 02-26-2013, 08:12 PM   eBay Motors  #25 (permalink)
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Buy four quarts and use about 3.75. I use Mobil One but it's just opinion.
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Old 02-26-2013, 08:51 PM   eBay Motors  #26 (permalink)
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okay thanks for the info on the quarts!
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2012 DENALI HD
XRT Pro - 5" Flo Pro SS - MBRP DP - AirDog II 165 - S&B CAI Dry
CTS Insight w/ Pyro - Barracuda Bypass
Korys Willis's Tunes!
AMP Power Research Steps
12" Alpine w/ Clarion Amp
Bakflip fibermax w/ Tonneau B-lights
5" Zone lift w/ Bilstein 5100's and Sulastic Shackles
22x11 2Crave rims -25 w/ 325/50R22 Trail Grapplers
ANGELL'S FISHING&HUNTING OUTFITTERS - AMISK LAKE SK. http://www.angellsfishandhunt.ca/
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Old 02-26-2013, 09:08 PM   eBay Motors  #27 (permalink)
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Quote:
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okay thanks for the info on the quarts!
Sure thing, but I just realized yours is a 2012. I doubt the specs have changed but wanted to point out mine's an '04 so as not to mislead you.
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2004 lb7 Cali. emissions ECLB 2500 HD. Tows 12K lb. 5th wheel.
Injectors replaced at 49K miles (Jan. 2012).
EFI Live by Idaho Rob with Edge Insight CTS and pyro.
Fumoto drain valve and stainless bleeder screw from Merchant.
Bilstein 5100's from Norcal Nick.
Prodigy P3 brake controller.
Transynd, Mobil Delvac and Stanadyne PF.
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Old 02-26-2013, 09:12 PM   eBay Motors  #28 (permalink)
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Old 02-26-2013, 09:25 PM   eBay Motors  #29 (permalink)
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Since we are on the subject of rear ends I replaced my DS axle seal about a year ago and it is leaking again....... Could I have a bad bearing or a bad seal? sorry didnt mean to hijack the thread!!!!!! When I did change out mine last time I used royal purple Synthetic and when I checked the level when I saw i had a leak it still looked good with 35,000 ish miles on it.
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Old 02-26-2013, 09:29 PM   eBay Motors  #30 (permalink)
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i used 4ish quarts of ams 75w-140
it looked like a milkshake with metal shavings in it.
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