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type of fluid for rear end? type of fluid for rear end?
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  #1  
Old 12-16-2007, 12:45 AM
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type of fluid for rear end?
i was reading that when your axle is submerged underwater you are supposed to replace the fluid, i've submerged my axle and wan to change the fluid i have a 98 4.2 4x4 if anyone knows it'll help alot

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  #2  
Old 12-16-2007, 12:46 AM
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just want to know what type of fluid
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  #3  
Old 12-16-2007, 03:07 AM
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75W140 full synthetic, and if it has limited slip, a 4 oz bottle of friction modifier from Ford. Get the sealant for the cover at Ford too.
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  #4  
Old 12-16-2007, 08:11 AM
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Your owner's manual will have the fill capacity & weight.

I just did mine with Royal Purple Max-Gear 75W140.

http://royalpurple.com/gear-oil.html

I had the work performed by my Ford dealership. I felt a little better about having the work done by a Ford trained tech and being covered by the Ford dealership's warranty. I paid for 1 hour of labor.
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  #5  
Old 12-16-2007, 06:44 PM
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I used valvoline 75w90 and friction modifier. Works great and its synthetic.
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  #6  
Old 12-16-2007, 06:53 PM
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Used Supertech Synthetic 75w-140. 3 Quarts at $10 each at Walmart.
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  #7  
Old 12-16-2007, 06:54 PM
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Quote:
Originally Posted by Fifty150
Your owner's manual will have the fill capacity & weight.

I just did mine with Royal Purple Max-Gear 75W140.
The RP already has the friction modifier in it too...no need to add extra

That's what I plan on using when I finally install my Mag-Hytec.
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  #8  
Old 12-16-2007, 08:47 PM
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cool thanks alot guys
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  #9  
Old 12-16-2007, 09:01 PM
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cool thanks alot guys
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  #10  
Old 12-16-2007, 09:48 PM
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just changed mine yesterday
used valvoline 75w140 synthetic
ford dealer told me to just run a bead of rtv gasket maker stuff around cover, hopefully it doesnt leak, haha ran it today and no problems so i should be alright
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  #11  
Old 12-18-2007, 06:28 PM
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I don't think that it is nesercery to drain and replace the axle fluid after having it under water. If this was the case I would have to do that 10 times a week during the spring, summer and fall. I have had to replace axel in my life. 50 years of driving 4x4's.
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  #12  
Old 12-20-2007, 08:16 PM
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Quote:
Originally Posted by Copenhagen848
The RP already has the friction modifier in it too...no need to add extra

That's what I plan on using when I finally install my Mag-Hytec.
I did not know that it already had friction modifer in it. Would I be hurting the gears if I did add the friction modifer from ford? Thanks Ben
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  #13  
Old 12-20-2007, 09:01 PM
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Quote:
Originally Posted by Ben99R1
I did not know that it already had friction modifer in it. Would I be hurting the gears if I did add the friction modifer from ford? Thanks Ben

Call Royal Purple, and see what they say. Then ask the same question to Ford.
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