Fluid change advice-type, quantities, etc
I'm still pretty new to Jeeps (full size GM trucks) but need to go some maintenance on my girlfriends 06 Commander. It has 110,000 miles and I'd like to change all of the transmission fluid/filter, front and rear diff fluid and have a couple of questions. It is currently at the dealer for a recall and we're picking it up today so I can't look under it right now.
What type fluid should I use for the diffs? 75W-90 or 150W-90?
Do I need any additive?
What quantities do the front and rear take?
I'm assuming the front has a drain and fill plug?
Does the rear have a gasket or do I need to buy RTV?
For the transmission, can I do a full flush by pulling the return line from the trans cooler? I did this on my Sierra Denali and it worked great...just dropped the pan, replaced the filter, then filled it up. Next I pulled the return line and would start it to push the old fluid out, shut it off to refill with new fluid and after 14 quarts the entire system had new transmission fluid in it.
Do guys to that to the Commanders as well? Which is the return line?
How much transmission fluid does the entire system hold?
It has the 4.7L V-8, I'm not sure if that makes a difference on which transmission it has.
I know it's a million questions so thank you in advance.
Last edited by Nubby; 02-01-2014 at 11:28 AM.