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Changing rear diff fluid
Posted 18 November 2005 - 10:22 PM
Posted 18 November 2005 - 10:39 PM
Use gear oil with API classification GL-5 for open differentials and GLS for limited slip differential. Viscosity should be:
*SAE 90-above 30 deg F
*SAE 85W-above 30 def F
*Sae 80W-below 0 def F
A regular member of Ultimate Sub site suggested to remove the UPPER plug first prior to removing and draining the fluid from the bottom... the obvious point is if you can't get fill plug out and no oil in gear box..URSCREWED.
I took mine out....took 3/8 drive I think (didn't have metric that fix) and 3 Ft cheater bar... made a loup POP, when she came loose... thus... assure to do top first just in case.
Posted 18 November 2005 - 11:00 PM
Posted 18 November 2005 - 11:12 PM
I quess one question I have then is how would I tell whether I have an open diff or limited slip diff? I was reading in my manual as well and 75/90 covers the largest range of temps so would that be the best oil to put in the rear diff and manual tranny? If not what weight would you suggest for someone who lives in Washington State? I am just wanting to change out the diff and tranny this weekend. Thanks a lot for the help. Any other input would be appreciated.
Posted 19 November 2005 - 12:37 AM
Posted 19 November 2005 - 01:03 AM
i used 75w90. as far as the actual labor, i used a 1/2" torque wrench AND my 3-ton jack to break the plugs loose.
Posted 19 November 2005 - 01:18 AM
I've also heard the easiest way to crack open the fill/drain holes is to set your wrench on a jack, then jack the car up using the drain/fill plug. It *should* eventually break the plug loose.
One more thing... may be nice to invest in one of the pumper thingies that screw onto a quart of oil. Probably easier to do that than get tricky with funnels.
Posted 19 November 2005 - 01:39 AM
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