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| What's the downside to using 75w-140 in the rear diff? http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=1&t=84530 |
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| Author: | omniphil [ Wed Apr 27, 2016 1:30 pm ] |
| Post subject: | What's the downside to using 75w-140 in the rear diff? |
I drive mainly on the street with little to no towing. Some occasional off roading. For street use they recommend 75w-90 in the rear diff and 75w-140 if towing/off-roading. So what's the downside to using 75w-140 if your not towing/offroading? gas mileage? |
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| Author: | Mountainman [ Wed Apr 27, 2016 2:00 pm ] |
| Post subject: | Re: What's the downside to using 75w-140 in the rear diff? |
Yup, a slight mpg hit. No need to mess with the 75-140 for you I bet. |
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| Author: | tommudd [ Fri Apr 29, 2016 1:34 pm ] |
| Post subject: | Re: What's the downside to using 75w-140 in the rear diff? |
Ran it in my 04 for the last 2000,000 miles, and swapped over the 03 when I bought it a few months back |
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| Author: | Mountainman [ Fri Apr 29, 2016 1:47 pm ] |
| Post subject: | Re: What's the downside to using 75w-140 in the rear diff? |
I'm hoping it will stop my minor pinion leak until I can afford my Ox locker. Before I knew any better, I put synthetic in, and sure enough, it leaks. Fingers crossed it will hold out for 6-12 months with thicker dyno... |
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