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Installed new Detroit Truetrac rear end. #5337782 01/31/20 10:14 PM
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domer10 Offline OP
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Changed the rear diff fluid on my Jeep last month, and few small chunks of metal came out along with drain plug just covered in metallic slime. Came with factory LSD but clutch style, and they are notorious for slowly degrading or actually degrading pretty fast, especially if you don’t change diff fluid.

But after a week, I love it, smooth from start....and after testing it out it some deep snow, 4x4 not even needed. If anyone ever thinking of changing over with jeeps....don’t hesitate. Also upgraded diff cover. Second picture is one of the chunks that came out, about 3 total that size.

D6CC83DF-19C1-4FDB-9E88-E1492CCE41DD.jpegA44E7590-CFF2-4D42-8805-205874AB14CF.jpeg
Last edited by domer10; 01/31/20 10:19 PM.

2013Jeep Wrangler Sahara Unlimited
2001 Toyota 4Runner
20010 Harley Davidson Rocker
Re: Installed new Detroit Truetrac rear end. [Re: domer10] #5337794 01/31/20 10:52 PM
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Chris142 Offline
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Is that like a detroit locker?


02 Wrangler Napa high milage 10w40
87 F250 Valvoline 15w40
07 fjcruiser Car lube plus 10w30
Z400 castrol T 10w40
Can am Maveric edge 5w40
57 case tractor Chevron sae30
Re: Installed new Detroit Truetrac rear end. [Re: Chris142] #5337798 01/31/20 11:02 PM
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domer10 Offline OP
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Yes!


2013Jeep Wrangler Sahara Unlimited
2001 Toyota 4Runner
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Re: Installed new Detroit Truetrac rear end. [Re: Chris142] #5337800 01/31/20 11:05 PM
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domer10 Offline OP
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Actually a bit different I believe the Detroit locker is a bit more aggressive with both wheels spinning at the same time where this has a bit more bias, and is it better on road where as a true locker is a bit more rougher on the road. Like when turning the true track will send a bit less power to outside wheel.

Last edited by domer10; 01/31/20 11:07 PM.

2013Jeep Wrangler Sahara Unlimited
2001 Toyota 4Runner
20010 Harley Davidson Rocker
Re: Installed new Detroit Truetrac rear end. [Re: domer10] #5337801 01/31/20 11:08 PM
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clinebarger Offline
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Acts like a Torsen diff, Uses torque biasing helical gears. But in a different arrangement than a Torsen.

Have a Eaton TruTrac in my Camaro's Dana 60.....Love it!


2001 Chevy Camaro L92/4L80E
2006 Chevy 2500HD LBZ/Allison 1000
2010 Toyota Corolla 2ZR-FE/U341E
2000 Toyota Avalon 1MZ-FE/A541E
Re: Installed new Detroit Truetrac rear end. [Re: Chris142] #5337804 01/31/20 11:12 PM
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domer10 Offline OP
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And is not a e-locker where it’s open until you hit a button, pretty sure the locker was selectable.


2013Jeep Wrangler Sahara Unlimited
2001 Toyota 4Runner
20010 Harley Davidson Rocker
Re: Installed new Detroit Truetrac rear end. [Re: domer10] #5337806 01/31/20 11:13 PM
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domer10 Offline OP
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https://m.youtube.com/watch?v=8IA9DVnkIaI Starts getting into detail at 137...only 2.37 clip.


2013Jeep Wrangler Sahara Unlimited
2001 Toyota 4Runner
20010 Harley Davidson Rocker
Re: Installed new Detroit Truetrac rear end. [Re: domer10] #5337807 01/31/20 11:15 PM
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spasm3 Offline
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East coast gear rebuilt the rear in my avalanche, with a trutrac. Works great. They recommended a 140 gear oil for towing.


13 elantra 81k 5w30 synpwr
03 chevy avalanche 83k synpwr 5w30
17 mazda cx-5 17000 miles synpwr 5w30
Re: Installed new Detroit Truetrac rear end. [Re: spasm3] #5337811 01/31/20 11:26 PM
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domer10 Offline OP
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I actually did a lot of research and I ended up using red line they say not to use a synthetic but I did a lot of research 75/90. And found along o people on fourms using it for years, even Eaton isn’t sure themselves.


2013Jeep Wrangler Sahara Unlimited
2001 Toyota 4Runner
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Re: Installed new Detroit Truetrac rear end. [Re: domer10] #5337872 02/01/20 02:26 AM
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I had true tracs, front and rear in both of my TJs, both worked fine. Now with the Rubicon, don't need them. Still, keep up with the fluid changes, I remember changing the fluid in my last one (rear) and after 10k, it was black and thin as oil, with no exposure to water, but some off roading.


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'08 GL1800
'10 Jeep Rubicon
'10 Corvette
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'14 Porsche Cayman
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'18 GMC Canyon Denali (Hers)
Re: Installed new Detroit Truetrac rear end. [Re: domer10] #5337897 02/01/20 05:57 AM
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I installed a Power Trax Lock Right in the rear of my CJ-7, never need to lock the front hubs in the snow and makes the steering response better for it.


1979 Garelli Rally Sport
2009 Cub Cadet LT1042
2002 BMW 540 M Sport (totaled)
2011 MB E350 4Matic wagon
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Re: Installed new Detroit Truetrac rear end. [Re: domer10] #5337949 02/01/20 07:54 AM
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buck91 Offline
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Originally Posted by domer10
I actually did a lot of research and I ended up using red line they say not to use a synthetic but I did a lot of research 75/90. And found along o people on fourms using it for years, even Eaton isn’t sure themselves.



Eaton seems to be of the old school as they recommended running dino on my Eaton Posi 9.75 as well. Generally they take the approach than dino runs cooler but I believe on the TT difs they claim that synthetic may be "too slippery" and alter the torque biasing. The fears do not seem to play out based on real world experience, though.


2011 F150 4x4 5.0L
1996 Mustang GT 5spd/ragtop
Re: Installed new Detroit Truetrac rear end. [Re: domer10] #5337955 02/01/20 08:01 AM
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Chris142 Offline
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Originally Posted by domer10
Actually a bit different I believe the Detroit locker is a bit more aggressive with both wheels spinning at the same time where this has a bit more bias, and is it better on road where as a true locker is a bit more rougher on the road. Like when turning the true track will send a bit less power to outside wheel.

Ah. I have a very aggressive Detroit locker in my F250. It clangs,bangs and eats rear tires like they are free. But it's good to have in the mud at the dump or out in the desert with a trailer full of off road vehicles.


02 Wrangler Napa high milage 10w40
87 F250 Valvoline 15w40
07 fjcruiser Car lube plus 10w30
Z400 castrol T 10w40
Can am Maveric edge 5w40
57 case tractor Chevron sae30
Re: Installed new Detroit Truetrac rear end. [Re: Chris142] #5338063 02/01/20 10:31 AM
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Originally Posted by Chris142
Originally Posted by domer10
Actually a bit different I believe the Detroit locker is a bit more aggressive with both wheels spinning at the same time where this has a bit more bias, and is it better on road where as a true locker is a bit more rougher on the road. Like when turning the true track will send a bit less power to outside wheel.

Ah. I have a very aggressive Detroit locker in my F250. It clangs,bangs and eats rear tires like they are free. But it's good to have in the mud at the dump or out in the desert with a trailer full of off road vehicles.


My SRT has an electric locker in the rear (which I have no control over) not sure who makes it, but it's very transparent.


2019 RAM 1500 Sport - Mobil 1 EP 0w-20, FRAM Ultra
2020 Grand Cherokee SRT - Ravenol SSL 0w-40, FRAM Ultra
Re: Installed new Detroit Truetrac rear end. [Re: Chris142] #5338252 02/01/20 02:42 PM
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Originally Posted by Chris142
Originally Posted by domer10
Actually a bit different I believe the Detroit locker is a bit more aggressive with both wheels spinning at the same time where this has a bit more bias, and is it better on road where as a true locker is a bit more rougher on the road. Like when turning the true track will send a bit less power to outside wheel.

Ah. I have a very aggressive Detroit locker in my F250. It clangs,bangs and eats rear tires like they are free. But it's good to have in the mud at the dump or out in the desert with a trailer full of off road vehicles.

Weirdly, my '04 E-350 6.0 PSD work van had a factory locker in it that worked fine when cold, but if you took it on a long interstate run it would crack & pop going around corners and make turning somewhat difficult. The aftermarket Eaton in my F-450 has yet to have any trouble.


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