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-   -   Diff fluid...? (http://www.wranglerforum.com/f19/diff-fluid-86243.html)

Mikekaz1 03-24-2011 05:13 PM

Diff fluid...?
 
I sound like kinda an idiot. What kind of oil/grease should i use to fill the differentials up?

Ibuildembig 03-24-2011 05:18 PM

I use basic 75-90W gear oil

Mikekaz1 03-24-2011 05:24 PM

Quote:

Originally Posted by Ibuildembig
I use basic 75-90W gear oil

Ok thank you!

bluetj97 03-24-2011 09:31 PM

If ur not sure. Ask ur local advanced auto parts store

Mikekaz1 03-25-2011 11:06 AM

Parts store found the right kind. 80w-90 gear oil

JIMBOX 03-25-2011 11:22 AM

:D Depends on what you're driving !

Does it have LSD/ tow/off-road/front-rear-

:dance::rofl: JIMBO

Mikekaz1 03-25-2011 11:24 AM

I gotta 2000 tj sahara

Mortalis5509 03-25-2011 11:25 AM

Don't use synthetic as it doesn't pull heat away from the ring and pinion.

JIMBOX 03-25-2011 11:32 AM

:D Heh Heh, I didn't mean which jeep, but if you had modidied diffs/and LSD additive is needed for longevity/towing/wear-


Quote:

Originally Posted by Mikekaz1 (Post 1137503)
I gotta 2000 tj sahara

Use synthetic if you want to, as long as its the recommended weight-I use Mobile one 75W-140 in my JKU-

:dance::rofl: JIMBO

Mikekaz1 03-25-2011 11:34 AM

Quote:

Originally Posted by JIMBOX
:D Heh Heh, I didn't mean which jeep, but if you had modidied diffs/and LSD additive is needed for longevity/towing/wear-

Use synthetic if you want to, as long as its the recommended weight-I use Mobile one 75W-140 in my JKU-

:dance::rofl: JIMBO

Ohhh haha. Yeah Its all stock other that a lil lift kit.

JIMBOX 03-25-2011 11:40 AM

:whistling: Oh Oh, a lift kit-well then -


Quote:

Originally Posted by Mikekaz1 (Post 1137518)
Ohhh haha. Yeah Its all stock other that a lil lift kit.

You need a special elevation corrected diff. fluid, with a low barometer addition !!(made in China)

Heh Heh-I don't think I have to mention that I'm kidding !

Good day

:dance::rofl: JIMBO

Mikekaz1 03-25-2011 11:45 AM

Hahaha. What a kidder :)

Mortalis5509 03-25-2011 12:01 PM

Quote:

Originally Posted by JIMBOX (Post 1137515)
:D Heh Heh, I didn't mean which jeep, but if you had modidied diffs/and LSD additive is needed for longevity/towing/wear-




Use synthetic if you want to, as long as its the recommended weight-I use Mobile one 75W-140 in my JKU-

:dance::rofl: JIMBO

Currie did test showing how synthetic doesn't pull heat away.

JIMBOX 03-25-2011 12:08 PM

:whistling: Currie doesn't mfg "JEEPS"


Quote:

Originally Posted by Mortalis5509 (Post 1137569)
Currie did test showing how synthetic doesn't pull heat away.

Chrysler does and Syn Diff. fluid (75W-140),is one of their recommendations for the JJK/JKU jeeps-towing/police/off-road-

Any Trac-loc diffs use synthetic fluid with additive !

:dance::rofl: JIMBO

Mortalis5509 03-25-2011 12:41 PM

Quote:

Originally Posted by JIMBOX (Post 1137576)
:whistling: Currie doesn't mfg "JEEPS"




Chrysler does and Syn Diff. fluid (75W-140),is one of their recommendations for the JJK/JKU jeeps-towing/police/off-road-

Any Trac-loc diffs use synthetic fluid with additive !

:dance::rofl: JIMBO

Agree.

Now we both can agree to whoever makes the axle it all has the same internal parts. Now with that being said it won't pull heat away and it doesn't matter if its a jeep axle or not (actually its a dana axle which I'm sure you know). The rotating parts create heat, period. A special test axle was built for the study.

Jerry mentioned it in a thread and that is where I mentioned not to use it.
Here is his exact quote: "I essentially agree 100% with you. But one caveat... after an excessive number of unexplained ring & pinion gear failures in their extreme-duty axles, Currie finally isolated the cause down to the use of synthetic gear lubes that some of their customers used to replace the factory installed conventional gear lube. It shocked everyone. Once Currie changed their warranty requirement to require (!) the use of conventional gear lubes and that the warranty would be voided with the use of a synthetic gear lube, their failure rate went way back down to the normal rare failure. Their tests eventually found that synthetic gear lubes do run cooler but for a TOTALLY unexpected reason... that synthetic gear lubes don't "sink" (extract) the heat from the ring & pinion gears as well as conventional gear lubes do. They had to build a special axle so the heat at the ring & pinion gears could be measured directly to confirm what their other tests were indicating. That's why an IR gun pointed at a differential housing indicates the housing is cooler running synthetic lube, because the synthetic isn't extracting the heat out of the R&P gears as well as a conventional gear lube does. That was a long-unexplained mystery that was finally solved. Again, it totally surprised everyone in the aftermarket axle industry. Other aftermarket offroad axle manufacturers besides Currie have also started requring the use of conventional gear lubes in their axles to maintain the warranty. "

Here is the thread as well: http://www.wranglerforum.com/f5/gear...d44-77525.html

JIMBOX 03-25-2011 12:54 PM

:whistling: Use what you and Jerry want-I'll stick with Mobile one -


Quote:

Originally Posted by Mortalis5509 (Post 1137636)
Agree.

Now we both can agree to whoever makes the axle it all has the same internal parts. Now with that being said it won't pull heat away and it doesn't matter if its a jeep axle or not (actually its a dana axle which I'm sure you know). The rotating parts create heat, period. A special test axle was built for the study.

Jerry mentioned it in a thread and that is where I mentioned not to use it.
Here is his exact quote: "I essentially agree 100% with you. But one caveat... after an excessive number of unexplained ring & pinion gear failures in their extreme-duty axles, Currie finally isolated the cause down to the use of synthetic gear lubes that some of their customers used to replace the factory installed conventional gear lube. It shocked everyone. Once Currie changed their warranty requirement to require (!) the use of conventional gear lubes and that the warranty would be voided with the use of a synthetic gear lube, their failure rate went way back down to the normal rare failure. Their tests eventually found that synthetic gear lubes do run cooler but for a TOTALLY unexpected reason... that synthetic gear lubes don't "sink" (extract) the heat from the ring & pinion gears as well as conventional gear lubes do. They had to build a special axle so the heat at the ring & pinion gears could be measured directly to confirm what their other tests were indicating. That's why an IR gun pointed at a differential housing indicates the housing is cooler running synthetic lube, because the synthetic isn't extracting the heat out of the R&P gears as well as a conventional gear lube does. That was a long-unexplained mystery that was finally solved. Again, it totally surprised everyone in the aftermarket axle industry. Other aftermarket offroad axle manufacturers besides Currie have also started requring the use of conventional gear lubes in their axles to maintain the warranty. "

Here is the thread as well: http://www.wranglerforum.com/f5/gear...d44-77525.html

-JIMBO

Mr_RPM 03-25-2011 04:31 PM

what conditions were those failed axles under?
Conventional oil may be waaay better for removing heat, but at what point do u run into heat problems?
ALOT of people run synthetics and have no heat problems, so the advantaged of synthetic for them out weighes the dis advantage of synthetic oil and heat.

so what type of wheeling is done to generate enough heat that conventional is required?

JIMBOX 03-25-2011 04:59 PM

:D Heh Heh, I'm afraid there are some recommendations that Chrysler makes concerning the Jeeps they're responcile for, that I disagree with, but

At least my '08 JKU Rubi was mfg'd with the recommendation for REAR diff. fluids is--75W-140 SYNTHETIC grease, when used for Police/ Towing/ off-road use-and thats how mine will/is subjected to use-

Now they don't specify Mobile one, SYN., but they do specify SYNTHETIC, now I don't know if that continued thru 2011-

Thats my story and I'm sticking withit-

:dance::rofl: JIMBO

Mr_RPM 03-25-2011 05:09 PM

Im using mobile 1 also.

Hammerwalk 03-25-2011 05:24 PM

i just did mine this past weekend with RP 75w-140. sh**s expensive!

Mortalis5509 03-26-2011 02:25 AM

Quote:

Originally Posted by Mr_RPM (Post 1137995)
what conditions were those failed axles under?
Conventional oil may be waaay better for removing heat, but at what point do u run into heat problems?
ALOT of people run synthetics and have no heat problems, so the advantaged of synthetic for them out weighes the dis advantage of synthetic oil and heat.

so what type of wheeling is done to generate enough heat that conventional is required?

If your driving down the road your creating heat. If the gears are moving they are creating heat.

I guess long wheeling trips create heat and depending on how much skinny pedal is used.


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