So im planning on flushing the tranny in my truck tomorrow i was just wondering what kind of oil do some of you prefer. I ended up picking up mobil super atf+4. is that a good oil or should i stick with mopar?

 

Yep.............it's a good oil.
All ATF4 is pretty much the same I believe as it's so highly spec'd, so your good to go.
Are you doing a pan drop or a full flush?
If your doing a full flush and you have lots of miles on that 03 like mine and you know it hasn't been flushed or changed before, do a pan drop only.
A full flush has the chance to make your auto box screw up.
Al.

 

The flushes aren't the problem, it's the lack of maintenance that gives trouble when routine services are done.
If you are doing a flush, the only thing you need to do for a worry free flush is to drop the pan so you can wipe it out and change the filters. THEN, flush away. It's the guys who have like 80-100kmi on their rides and have never changed the filters or dropped the pans that have problem with the flushes because everything in the pan is what causes the problem.
I have NEVER had a problem doing it that way. Only people I have heard tranny complaints with flushes were the people who didn't have the pan dropped because places like Jiffylube or Valvoline DO NOT drop the pans when they do flushes because they are freakin lazy and their flush prices don't include that stuff.
You'll need 8qts for the pan drop only and you'll need about 17qts total for doing the pandrop then flush.

 

Which is what I said.

"If your doing a full flush and you have lots of miles on that 03 like mine and you know it hasn't been flushed or changed before, do a pan drop only."

A full flush on a tranny with no or little maitenance, will dislodge tarnish and debris from worn clutches etc.
This will block up the valve body and other narrow passageways in the tranny and cause a transmission failure.

A pan drop with a subsequent filter and 7-8qt fluid change, will spruce up that tranny without causing a potential problem.

BTW, when ordering your main flat tranny filter (there are two, a spin on cooler filter and the main flat filter), be sure to specify it's for a 4x4 as a 2wd main filter isn't the same. It has a shorter pickup and is slightly smaller than the 4x4.
Also, when reinstalling that filter, replace the small "O" ring seal up in the valve body. The new filter should come complete with a new one.
The old "O" ring can somtimes be a pig to remove and be careful not to damage or scratch the valve body when you do it.
Put the new "O" ring in, then gently tap it flush to the valve body with the end/base of a wooden hammer shaft/same size socket. DO NOT fit it to the end of the filter and push up into the valve body. This will cause big problems and a poor seal.
Make sure it's seated flush, as an incorrect seal can cause the truck to stall when coming to a stop.
Hope this helps?
Al.