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Topic Summary

Posted by: bayo500
« on: July 17, 2011, 02:48:29 AM »

I use � - �LS 90 DIFF OIL GL5 �- � � for front and rear hypoid diffs - your diffs have hypoid cut gears

For the GEAR BOX and Transfer box i use - � 80W90 GL5 GEAR OIL �- does not attack yellow metal (sincro rings)

My book says Trans-Gear 80 GL 4 is a 4 /5 speed gear box oil, i wouldn't use this.

So for your jeep you need 3 types of oil � � Engine oil - �Diff oil - �Gear oil � - �sitting in your garage all clearly marked... just like mine wasn't



Posted by: aboyandhisdog
« on: July 12, 2011, 10:44:28 PM »

Thanks again, Larry.  Am I correct to understand that a "GL-4 is not needed as there are no "yellow" metals?
Posted by: rocketeer
« on: July 12, 2011, 10:00:05 PM »

I prefer straight 90W gear oil but it's virtually impossible to find so 80/90W is what is recommended. Personally I'm going with 80/140W. I don't recommend that if anyone does a lot of highway driving as there is a slight concern for increased heat.

Larry
Posted by: aboyandhisdog
« on: July 12, 2011, 08:13:27 PM »

Howdy,
What do you guys like to use in the differentials?  My manual says "MIL-L-2105B"  80 wt.  but I have no idea what I'm looking for.   Would a 75/90 wt. gear lube do the trick?  Thank you!