no. i would not flush it.
i would drain/drop the pan, replace the filter, refill and drive it a few days. then do it again.

 

he said flush it run it for a few day a lot of drving and flush it agin to get rid of all of the old crap it that trans that has bulit up over the years. ok mabey not why not flush it?

 

ok thanks for the help, i may wait a few days to do this, i want to see if anyone else on this forum has any opinions on this trany oil issue.

but while im at it what diff oil should i use? and do i need a oil modifier?

 

Hey Rag, you should get GermanPride to work on your new truck!

 

lol what the heck? whos is this? love the name vwanddodge and no GP cant touch my cars lol

 

icy....... ?

anyone know, do i need oil modifier for my diffs?

 

You know it Welcome to the world of Dodges!

 

this is what i used Torque-Drive Synthetic Automatic Transmission Fluid, Severe Gear 75W-90,P.i. Performance Improver Gasoline Additive,and i cant find there trans fer case stuff that i have all amsoil.

 

ok jus bought a trany cooler, i will install it tommorow. id really like to do the diffs oil also. but not sure about if they need oil modifiers?

 

i wouldn't use anything in the transmission other than atf+4. that's the oil recommended by dodge. its full synthetic. don't use any additives.

for differentials, you can use about anything. haynes says 90w GL-5. i use the valvoline 85w90 in both. if you have a limited slip differential, then you add the little bottle of friction modifier. its on the shelf right beside the gear oil.