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2002 explorer rear diff fluid change

Discussion in 'Stock 2002 - 2005 Explorers' started by ivrb, October 15, 2011.

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    1. ivrb

      ivrb Member

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      Any one have an idea the steps to change diff fluid from the rear diff, its independent suspension
       
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      my1zamboni Member

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    5. Exproblems

      Exproblems Well-Known Member

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      >>>>>>>>>>>>>>>>>>>

      Besides the info you got from other people in here on this rear diif fluid change job, you will need to find out if your rear diff is a "Limited Slip" differential. If you DO HAVE a Limited Slip Diff, you will need to add 4 ounces of Friction Modifier along with the new gear oil. Rear Diff holds approx 1.60 to 1.75 quarts of oil, so 2 quarts of new gear oil will do the job, Mobil 1 75W-140 Full Synthetic or equivalent brand. Friction Modifier comes in a squeeze tube and costs about $6-$7 in a parts store or buy Fords own brand from a Ford dealership. Ford recommends this additive BTW for Limited Slip diff's.
       
    6. Thomas Mackin

      Thomas Mackin New Member

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      Ford also recommends changing what they called for to the heavier oil. I have had great luck with Amsoil 75-140 which is thetype Ford now recommends. Also I used the Amsoil friction modifier because I have the limited slip. If you do the front one use the 75-90 and no modifier but you will have to use your pump to suck out the old through the fill port because ther is no drain. A good idea if you have high mileage and use the 4x4. Do not forget to put a sealer on the threads of the plugs.
       
    7. RickM

      RickM Active Member

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      I don't have limited slip but I do suffer from the all-to-common rear end whine. I filled with one bottle of Ford's heavier diff oil and a bottle of Lucas oil treatment. The whine is about at 1/3 the level it was before. Better than I expected.

      Lucas states that one could use their "additive" exclusively in a diff. Not sure if this would result in better performance or a quieter ride.
      Also, the stuff is a real bear to pump due to its honey-like viscosity.
       

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