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 Transfer case gear oil question
#1049033
07/13/12 05:01 AM
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Joined: Nov 2010
Posts: 173
OP
Wheeler
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The owners manual specifies straight 90w for the transfer case. All I can find is 75-90w or 80-90w. Can I use a multiple viscosity gear oil in the transfer case?
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Re: Transfer case gear oil question
[Re: promodmerc]
#1049034
07/13/12 05:28 PM
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Joined: Apr 2011
Posts: 326
Mudrunner
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Yes, no problem. The blended oils are rated that way to indicate they will function in varying temperature conditions (i.e. summer/winter), with the high value associated with high-temp/reduced viscosity and the low value reflecting low-temp/high viscosity (hot and thin vs. cold and sludgy). Thus, the more extreme-range oils would be good for colder climates, such as the northern region of the U.S. In your neck-o-the-woods, 80/90 is plenty-fine... <img src="/forums/images/graemlins/kewl.gif" alt="" />
1997 Sportage 4x4, auto-trans, Warn manual hubs, 4" UPYOURKIA front lift, TJ 106AA rear springs, 2-5/8" body lift, 31x10.50 treads, SmittyBilt SRC front and XRC rear bumper, swing-out tire mount, OBX LSD front diff, Track Finder rear locker, 5.38 R&Ps and... really crappy gas mileage! <img src="/forums/images/graemlins/shiner.gif" alt="" />
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Re: Transfer case gear oil question
[Re: Peabody]
#1049035
07/13/12 06:30 PM
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Joined: Nov 2010
Posts: 173
OP
Wheeler
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Yes, no problem. The blended oils are rated that way to indicate they will function in varying temperature conditions (i.e. summer/winter), with the high value associated with high-temp/reduced viscosity and the low value reflecting low-temp/high viscosity (hot and thin vs. cold and sludgy). Thus, the more extreme-range oils would be good for colder climates, such as the northern region of the U.S. In your neck-o-the-woods, 80/90 is plenty-fine... <img src="/forums/images/graemlins/kewl.gif" alt="" /> Thak you Mr. Peabody <img src="/forums/images/graemlins/smile.gif" alt="" /> I figured 75-90 or 80-90 was fine. We do hit negitive temps in Kansas City.
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Re: Transfer case gear oil question
[Re: promodmerc]
#1049036
07/14/12 12:23 AM
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Joined: Nov 2010
Posts: 173
OP
Wheeler
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I forgot to ask this.
What Allen wrench/socket size is the fill & drain plug on the t-case?
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Re: Transfer case gear oil question
[Re: promodmerc]
#1049037
07/14/12 06:31 AM
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Joined: Feb 2000
Posts: 6,247
Trail Leader
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Sorry, can't resist...
I forgot to ask this.
What Allen wrench/socket size is the fill & drain plug on the t-case?
The size that fits... <img src="/forums/images/graemlins/smile.gif" alt="" /> <img src="/forums/images/graemlins/zombie.gif" alt="" />
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