Rock Jock What gear oil - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 9 Old 08-24-2015, 06:06 PM Thread Starter
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Rock Jock What gear oil

What is a good gear oil to use in the Rock Jocks. Currie sells 9-Plus Racing Gear Oil. Unable to get that locally. What other 85w 140 oil can be used.
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post #2 of 9 Old 08-24-2015, 10:12 PM
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Amsoil is good stuff and usually not too hard to find.

2011 Jk 2 door 6 speed. 5.13 gears, 1350 driveshafts, cooper sst+ 35s, warn 9.5, various armor, 1/4 pounder bumper, 12 inch King coil overs, CB, still running the dana 30 sleeved and gusseted up front. Someday wanna go with 1 ton axels but for now I love my JK.
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post #3 of 9 Old 08-24-2015, 11:19 PM
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Whatever is on sale a kragen, vato zone, or whatever your local parts store happens to be.

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post #4 of 9 Old 08-25-2015, 07:56 AM
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If you have a locker, make sure you use the proper gear oil for that locker. Some require additives. Royal Purple is good stuff too..

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post #5 of 9 Old 08-25-2015, 08:26 AM
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I use Lucas non synthetic in my Prorocks with ARB lockers. Change it out every 10,000 miles.
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post #6 of 9 Old 08-25-2015, 09:34 AM
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I once read that Scott from Dynatrac recommends non-syn Lucas. I change mine often enough that I don't worry too much about it. If it's GL-5 it's good enough for me.
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post #7 of 9 Old 08-25-2015, 12:40 PM
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Quote:
Originally Posted by tslewisz View Post
.... If it's GL-5 it's good enough for me.
ding ding ding!! Ive ran the same generic gear oil in the dana 80 in my tow rig for ever. Its got 180k miles on it, towed north of 15k lbs for propably 30% of those miles and ive changed the diff fluid maybe 2 times in 10 years

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post #8 of 9 Old 08-25-2015, 01:09 PM
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Quote:
Originally Posted by Fueler View Post
ding ding ding!! Ive ran the same generic gear oil in the dana 80 in my tow rig for ever. Its got 180k miles on it, towed north of 15k lbs for propably 30% of those miles and ive changed the diff fluid maybe 2 times in 10 years
Unfortunately, synthetic is specified by the OEM for my tow rig. It has AAM axles.
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post #9 of 9 Old 08-26-2015, 05:11 PM
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That really depends on what differential is used, but general we recommend we recommend 85-140W GL-5, non synthetic in our axles.

You have to be very careful when using synthetic gear lube in a rear end. A lot of ring and pinion/differential/complete rear end manufacturers advise against using synthetic gear lube in rear ends. Some will NOT even honor the warranty if synthetic lube was used and the unit failed.
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