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Old 07-18-2007, 12:51 PM   #1
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Axle Lubrication So Many Stories....

I have a dana 44 in the rear and the 30 on the front. I have seen and been told different things about what to change the fluids out with. I was told that I needed to use 80w-90, and if you had a trailer towing package use 75w-140 syntheticis this correct? I have a limited slip rear end in it. So obviously I need to add an additive to it. Is the difference in lube just for heavy duty applications then? Is going to matter which viscosity I use? Also the front uses the same minus the additive correct?

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Old 07-18-2007, 01:58 PM   #2
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Originally Posted by Sahara97 View Post
I have a dana 44 in the rear and the 30 on the front. I have seen and been told different things about what to change the fluids out with. I was told that I needed to use 80w-90, and if you had a trailer towing package use 75w-140 syntheticis this correct? I have a limited slip rear end in it. So obviously I need to add an additive to it. Is the difference in lube just for heavy duty applications then? Is going to matter which viscosity I use? Also the front uses the same minus the additive correct?
Use whatever weight you want, if you tow use the heavier. If you have a LIMITED SLIP you need the additive, if you have a mechanical locker you do not need the additive.

One fact: Leave ONE BOLT in at the top of the cover, loose, when you pry the cover off unless you want a face full of lube when it falls off into the drain pan...

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Old 07-18-2007, 03:09 PM   #3
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Yea the weight you use depends on how you drive it. I will use a 80-90 weight if im going to have it on road a lot. I will switch to 85-140 when i take it off road, little bit thicker, but you gotta think im drivin it harder plus going through creeks and rivers if any bolts may be a little loose or there is a leak in the seal somewhere and a little bit of water gets in, it wont break down as quick since it so thick. It will give me time to get it back home and change it out again.
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