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Diff Fluid Change

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Old Dec 19, 2016 | 08:42 PM
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05Maroon6Ohhh's Avatar
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Diff Fluid Change

Hi everyone I am looking to do a fluid change in my 05 250, I am wondering what fluid all of you guys are running in your diffs? Thanks everyone
 
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Old Dec 20, 2016 | 01:25 AM
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87crewdually
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I use Valvoline Full Synthetic 75w140. It's formulated for limited slip differentials so no additives are needed.
https://www.napaonline.com/napa/en/p/VAD982/VAD982

Mobil Synthetic is also popular.
 
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Old Dec 20, 2016 | 06:14 AM
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I use royal Purple 75W-140 synthetic gear oil and AR-9100. RP is a little more expensive then other synthetics and it is available at Advance Auto. I also have a larger diff cover that increases my capacity from 3 to 6 quarts.


Ed
 
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Old Dec 20, 2016 | 07:35 AM
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I also use Valvoline Full Synthetic 75w140. Great price too.
although I think I did add slip modifier when I changed mine.
 
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Old Dec 20, 2016 | 03:52 PM
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I'm using this, seems to work OK:

Castrol MTX Full Synth 75W-140
 
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Old Dec 20, 2016 | 09:32 PM
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Fleet Farm 80w-90 but that's because of my true trac
 
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Old Dec 20, 2016 | 11:03 PM
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Lucas synthetic 75w140. Hytec diff cover.
 
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Old Dec 22, 2016 | 06:37 PM
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Thanks for the input everyone!
 
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