99 rear diff fluid change how to, synthetic ok?
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99 rear diff fluid change how to, synthetic ok?
99 ram 1500 2wd,factory posi, 5.9 engine. how should i go about changing fluid and can i use synthetic gl5 75w-140 and how much fluid does it take?
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any GL5 gear lube is fine, oil or synthetic. i recommend walmart brand in the gallon jug as being affordable. they have 80w90 or 75w140. either is ok.
if you have a limited slip (posi), you need the little bottle of friction modifier.
off the top of my head, i think it takes 2-1/2 quarts. its in the haynes manual and the service manual which is in the sticky's at the top.
you can seal the diff cover with RTV or buy a felpro gasket from Advance for about $4-5.
http://www.pavementsucks.com/tech-article-4.html
welcome to DF, post some pictures of your truck. we like pictures.
if you have a limited slip (posi), you need the little bottle of friction modifier.
off the top of my head, i think it takes 2-1/2 quarts. its in the haynes manual and the service manual which is in the sticky's at the top.
you can seal the diff cover with RTV or buy a felpro gasket from Advance for about $4-5.
http://www.pavementsucks.com/tech-article-4.html
welcome to DF, post some pictures of your truck. we like pictures.
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Joined: Aug 2011
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From: Southern Massachusetts
2.5 quarts!? More like 0.125 quarts. Most auto stores sell the 10z bottle of lsd additive, use 4oz (just over half) in your rear diff and your all set.
Edit: I see you meant 2.5 quarts of gear oil, not friction modifier
Edit: I see you meant 2.5 quarts of gear oil, not friction modifier
Last edited by Matt Nickerson; Apr 15, 2013 at 08:51 PM.