I am going to be some servicing to my trans soon and was wondering whats the best stuff to put back in? Are synthetics like amsoil good but then i would need to flush everything out for this correct and if i was to do it this myself where you disconnect the trans cooler how many quarts would i need?

Or is it better to just replace the fluid you took out of the pan when dropped?

 

Fluid has to be compatible with ATF+4. Mopars is already a full synthetic, pick it up at Wal-Mart, about half what the dealer charges. All you need to do is drop/ clean the pan and magnet, change the filter, and adjust the bands. I never serviced the transmission, always had the dealer do it, so I couldn't tell you how to adjust the bands. Maybe search on it.

 

Here is a link on how to adjust the bands.

http://www.dodgeram.org/tech/transmi...T_band_adj.htm

 

06RAM2500,

Mopar ATF is not full synthetic its made form group III crude oil.

itr.#1446,

If a person wants to use Amsoil synthetic ATF they don't need to flush out all of the old fluid, I know as when I did mine I just replaced the filter and refilled with Amsoil and have not had any problems in over 20K. FYI to just replace the filter and refill you will need around 6-7 qt's of ATF.

 

amsoils website says that the 48re has a 17quart capacity.-so if you only dump in 6-7quarts of amsoil-wouldn't you be diluting the good stuff quite a bit?

 

that's what i am curious if i should just flush the whole thing and add synthetic but at the same time i don't have a lot of money to be spending so i might just keep mopar stuff in there until the i can afford to flush the whole thing with synthetic.

i am changing the filter while i am in there and thank you for the link

 

I'd keep ATF+4 in it, especially if you're still in the 7-70 powertrain warranty period.

 

Most shops don't recommend doing a flush as it stirs up all the junk inside the transmission. You only need to drop the pan and replace the filter, fluid and clean the pan.

 

When I switched to Amsoil ATF...we just dropped the pan, changed the filter, adjusted the bands, and refilled with about 8 quarts of fluid. Very simple procedure and no issues with just dropping pan and refilling...

 

that is a good point i bought my truck used so i bought a 7/100k miles warranty

 

when are you guys getting the 1-2 hunt when driving and it tries to shift to second or when at very low speeds. Also if i was to bring my truck to dodge for the tsb would they do it no questions asked even if i didn't have the problem yet?

 

(Quote) Mopar ATF is not full synthetic its made from group III crude oil. (quote)

that is not correct. I have a bottle of Mopar atf+4 in my hand and it clearly states on the label that it is "fully synthetic". if it had any petroleum products in it, it would say "synthetic blend". $4.64 at wallmart. they also have "supertech" atf+4 which is also fully synthetic for $3.77 which is probably also just fine but for the extra 90cents a quart I figured I would rather the peace of mind of knowing I'm not installing cheapy swill fluid in my 40K truck

 

...you can do a "fluid exchange" without stirring up the junk. Just remove the rear tranny line, start the engine long enough to let it fill a gallon jug, add a fresh 4qts to the tranny, repeat 4x.

That's what I did for my 60k service. Good as new!

 

I think i will try this way .....whats size hose should i buy 3/8? and how will i determine which line is the return? like where is the hose to the trans farther towards the front of the trans?

And whats the total amount of quarts i need?

 

I used a garden hose and a normal radiator clamp, the return line is the rear one, and you should get 17-18 qts but you'll probably use 16 (you can use the extra two for the transfer case).

Here's a write-up that works:

https://www.dieseltruckresource.com/...ghlight=tranny

Pretty much a piece of cake, just slow down, take your time and follow each step carefully (I nearly forgot to tighten my filter fasteners because I took a break to eat dinner).