Dana 80-LS- Fluid Change w Synthetic-towing

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04-10-2008, 09:39 AM

supr

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Dana 80-LS- Fluid Change w Synthetic-towing

Thoughts on changing the fluid while doing some heavy towing, with the limited slip? I use the RP 75-140. The book says 15k, others have said up to 30k with synthetic. I know the clutches will leave stuff in the fluid, over time.

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04-12-2008, 03:32 PM

dozer12216

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Change it when it gets nasty looking or discolored. Syn is good.

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04-12-2008, 05:24 PM

CoastalDav

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I changed mine to synthetic at 110,000. Used Shaffer. 189K on the truck now, tow alot, no problems that I'm aware of.

Dave

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