Installed new Detroit Truetrac rear end.

Messages
599
Location
Ontario, Canada
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.jpeg


A44E7590-CFF2-4D42-8805-205874AB14CF.jpeg
 
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domer10

Thread starter
Messages
599
Location
Ontario, Canada
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.
 
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Messages
4,756
Location
Fort Worth, Texas
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!
 

domer10

Thread starter
Messages
599
Location
Ontario, Canada
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.
 
Messages
1,065
Location
Md, USA
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.
 
Messages
608
Location
North Carolina
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.
 
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3,221
Location
West Michigan
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.
 
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21,363
Location
Apple Valley, California
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.
 
Messages
43,030
Location
Ontario, Canada
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.
 
Messages
10,436
Location
Cincinnati, OH, USA
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.
 

domer10

Thread starter
Messages
599
Location
Ontario, Canada
Originally Posted by buck91
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.
Ya, plus you can't use a mineral with FM, but any fluid that has FL or FLM or something of that nature, which redline did, but they do not have any extra additives for LSD so it's the best synthetic I belive for them.
 
Messages
3,219
Location
Nashville, TN via Memphis
Originally Posted by OVERKILL
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.
It locks completely? As in, wheels lock together? Under what circumstances does it lock automatically?
 
Messages
3,219
Location
Nashville, TN via Memphis
Originally Posted by bullwinkle
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.
When you say locker, you mean an electronic locking rear differential? Why would this ever be engaged on dry pavement?
 
Messages
1,664
Location
Prospect, KY
Not sure what kind my Montero has but in soft sand and snow when spinning at low speeds like 5 mph you can feel it kick in and it takes right off like on dry ground. It is apparently an automatic mechanical one when needed.
 
Messages
5,691
Location
Atlanta
I run Delvac 1 gear oil in my Truetrac and it works fine. Detroit Locker, Detroit Truetrac, Eaton Posi are all different mechanism of course.
Is a good overview.
 
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