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  #1  
Old 05-24-2013, 12:10 PM
thekid0311 thekid0311 is offline
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Default Fluids question

I have 119k on my truck and Im getting ready change and flush all fluids except the oil because I just changed it about 500 miles ago. As far as the rear diff goes when I fill it with 85/140 do I need to add the limited slip additive to it or will it be fine without it? Also Making sure I have the right weight for the the front, it is 75/90 right? Also is the gear oil in the transfer case the same as the rear diff and do I need to add the additive into it also?

Im replacing the filter on the trans and doing a complete flush because Ive been doing a lot more towing lately and I just thought it would be a good idea because Im also adding the 1 ton tranny cooler to my truck and a tranny temp gauge.

Fluids got changed at the dealership around 60k but money is tight so Im doing it myself and Ive done this before on other vehicles so Im know what Im doing I just want to make sure I get the right weights for my truck.
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Old 05-24-2013, 03:28 PM
bparsel bparsel is offline
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Default

Rear Diff is 75/140 synthetic. Use Royal Purple and you dont need an additive as its already in there. - Just Under 3qts

Front Diff is GL5 75/90 - 2qts

Transfer case is the same as your trans ATF + 4 - 3.5-4 Pints
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Old 05-30-2013, 01:38 PM
SI Integra SI Integra is offline
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Default

bparsel answered your question perfectly, but I wanted to add another alternative to royal purple is Lucas oil. They also are full synthetic with the additive present.

Good luck, none of the work is complicated.
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