Differential Fluids? - Page 3 - 2014+ Jeep Cherokee Forums
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post #21 of 32 (permalink) Old 10-16-2015, 11:25 PM Thread Starter
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Originally Posted by jamie1 View Post
I haven't forgotten about you mudman1. We just haven't had any Cherokees come in for service.
Thanks. Tomorrow, assuming the world does not crash and burn, I am going to put the Jeep up on ramps and see if I can't knock out the fluid changes. I will document and post accordingly.
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2015 Trailhawk - Eco Green, 3.2L, Nav, Tow, Cold Weather. MODS: Goodyear Wrangler All-Terrain ProGrades 245/70R17; WeatherTech mats, vent shades; Magnaflow exhaust. Rigid SR 20" bar and Rock Lights. JW Speaker fog lights. Blue Ridge Overland Gear panels and bags. Pelican tool box loaded! Bubba Rope and Gators too. Much more....

Trailer: Custom built Montrose aluminum 4.5'Wx6'Lx3'H off-road utility with 3,500 lb Dexter torsion axle. Known as the Zombie Escape Trailer.
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post #22 of 32 (permalink) Old 10-18-2015, 10:54 PM Thread Starter
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Good evening all. Did my third oil change today and threw in a new Mopar filter. I used AMSOIL Signature 5W-20. Then I looked high and low for the PTU drain / fill. I did not want to drop skid plates as I had lots of other projects to tackle. I could not find it so I said screw it. I bought the lifetime warranty, it is on Mopar if they decided service of components is not important.
For the rear diff, I did pull the plugs. It is odd because with the right and left plugs out, oil will run out of the left but not the right. My Mityvac tube will not go down into the right hole, but it did in the left. I was able to suck out a couple of ounces and that is all. So I burned through one of the two quarts I bought by flushing. So once I sucked out what I could from the left hole, I used my hand pump to just flood both holes. Then I let it drip so it was not overfull. The oil did not look too bad and the metal shavings were reasonable. I have 14,400 miles on the clock.
FYI, I am not sure if it was the factory's fault or the dealer's when they did my drive shaft replacement in the spring, but both holes were a little low. Not scary low, but not level with the bottom.
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2015 Trailhawk - Eco Green, 3.2L, Nav, Tow, Cold Weather. MODS: Goodyear Wrangler All-Terrain ProGrades 245/70R17; WeatherTech mats, vent shades; Magnaflow exhaust. Rigid SR 20" bar and Rock Lights. JW Speaker fog lights. Blue Ridge Overland Gear panels and bags. Pelican tool box loaded! Bubba Rope and Gators too. Much more....

Trailer: Custom built Montrose aluminum 4.5'Wx6'Lx3'H off-road utility with 3,500 lb Dexter torsion axle. Known as the Zombie Escape Trailer.
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post #23 of 32 (permalink) Old 10-19-2015, 12:39 AM
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Thanks for sharing! Any pics of the dirty diff oil? What did you refill with? And this was with significant 4x4ing with only 15k? Just curious
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post #24 of 32 (permalink) Old 10-20-2015, 12:36 PM Thread Starter
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Thanks for sharing! Any pics of the dirty diff oil? What did you refill with? And this was with significant 4x4ing with only 15k? Just curious
Did you look at my pictures? The second from the last picture shows the oil I extracted from the rear diff.

2015 Trailhawk - Eco Green, 3.2L, Nav, Tow, Cold Weather. MODS: Goodyear Wrangler All-Terrain ProGrades 245/70R17; WeatherTech mats, vent shades; Magnaflow exhaust. Rigid SR 20" bar and Rock Lights. JW Speaker fog lights. Blue Ridge Overland Gear panels and bags. Pelican tool box loaded! Bubba Rope and Gators too. Much more....

Trailer: Custom built Montrose aluminum 4.5'Wx6'Lx3'H off-road utility with 3,500 lb Dexter torsion axle. Known as the Zombie Escape Trailer.
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post #25 of 32 (permalink) Old 10-21-2015, 04:22 PM
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Don't get me wrong, I agree with you. I hate these "sealed for life" units. Who's life??
The life of the sealed unit of course!
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post #26 of 32 (permalink) Old 10-22-2016, 11:21 AM
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Hey guys... this threads a little dated. I've had a few jeeps and done the DIF /Trans myself in the past.
I have a new 2014 Jeep Cherokee but don't do any off road and minimal towing. I'm not sure I'm buying this good for LIFE crap either - how often would you recommend PTU/Diff change?
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post #27 of 32 (permalink) Old 02-13-2017, 05:40 PM
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Seriously considering running royal purple 75-90 in transfer and rear. Any opinions on that? Very close viscosity and a superior product. Thoughts?
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post #28 of 32 (permalink) Old 03-09-2017, 11:46 AM
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The skid plate has to come off, correct? My unit has a slow leak and I would rather not have it grenade before the dealer can schedule another appointment to replace the PTU.

Yep, it was leaking from the day I drove it off the lot :-(
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post #29 of 32 (permalink) Old 03-09-2017, 03:49 PM
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The skid plate has to come off, correct? My unit has a slow leak and I would rather not have it grenade before the dealer can schedule another appointment to replace the PTU.

Yep, it was leaking from the day I drove it off the lot :-(
Did you need any help getting an appointment set? Please let us know, we're happy to help!

Kori
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post #30 of 32 (permalink) Old 03-09-2017, 07:22 PM Thread Starter
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Originally Posted by 29PalmsMark View Post
The skid plate has to come off, correct? My unit has a slow leak and I would rather not have it grenade before the dealer can schedule another appointment to replace the PTU.

Yep, it was leaking from the day I drove it off the lot :-(
To treat the front, yes they would have to. Not for the rear, there is not one there.

2015 Trailhawk - Eco Green, 3.2L, Nav, Tow, Cold Weather. MODS: Goodyear Wrangler All-Terrain ProGrades 245/70R17; WeatherTech mats, vent shades; Magnaflow exhaust. Rigid SR 20" bar and Rock Lights. JW Speaker fog lights. Blue Ridge Overland Gear panels and bags. Pelican tool box loaded! Bubba Rope and Gators too. Much more....

Trailer: Custom built Montrose aluminum 4.5'Wx6'Lx3'H off-road utility with 3,500 lb Dexter torsion axle. Known as the Zombie Escape Trailer.
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