A couple of maintainance question

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Jun 23, 2008 | 09:47 AM

#16

DBLR

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Joined: Jun 2006

Posts: 2,423

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From: Forest Grove, Oregon

Quote:

Originally Posted by Desert Dually

why do the diffs need to be changed at 20K miles in the Dodge trucks? Most other trucks i've had required much less diff maintenance. Is it really neccessary, or just a profit generator for the dealership? I could understand if you are doing a LOT of towing that it would put a "shear stress" on the diff lube, but what about if light towing accounts for only 10% of your mileage?

I would not run the cheap factory water looking gear oil longer then 7500 miles less if you tow heavy , JMHO. I would then use a very high quality GL-5 synthetic gear oil and not worry about changing it again for up to 100K. Believe it or not you can buy gear oil that is good for 100K for normal use and 50K for sever use.