I am a HUGE Amsoil fan. But not for the Dodge tranny. I tried it, and dumped it and went back to Valvoline ATF+4 Synthetic. These trannys seem picky, and the Amsoil was seeming to make it "slip" into gear. The mechanic warned me, and he is an Amsoil dealer, but against his warning I did it anyway. Never again. Its a great product, and its in my diffs, Oil, Transfer Case. But not my tranny.
im afraid to. i bought my truck with 95k on it. i assume it was never changed as the truck was neglected. i was always afraid to cuse it often causes problems if it hasnt been kept up with. shes got 143kish on her now still doing good.
#1. my truck has 105k. had it since 70k. i assume everyone will suggest i just do a pan drop and oil refill. 7qts or so. i know not to do a flush, but would you guys pump out the torque convertor too and get all the oil out i can while im in there? or is a 50% change of oil the right mix for an old tranny?
#2. why are some people adding 80weight gear oil to their trannys?
#3. how many inches lower is a new higher capacity oil pan, and how many quarts does it add to the capacity. its basicly just to spread the heat out a little more right? keep the temps down.
You could possibly change the fluid and filter but with that many miles I wouldn't suggest a flush, it might knock loose some debris that can cause damage.
i thought it was pretty funny i brought my truck to a local shop when i bought it last year to change the fluid filters and adjust the bands i looked under there a few days later and they didnt even drop the pan there was no marks on any of the bolts either lol
So what is the consensus on Royal Purple ATF? I see they do reccomend it ok for Chrysler trannys. ATF+4 I have used it with great results in my diff's and engines on the HEMI and my racecar. Also in my TH400 in the racecar. 75K Km on my Hemi tranny now, I should change it.
Also, how much do I need? I read you can pull the cooler line and run it out? Do you idle till it just stops pumping? Isn't that bad for internals? Run them dry??
I did the first at 30k, second at 60k, 3rd at 100k. Going to do the next at 150k, and every 50k after that.
Here are my thoughts:
- NEVER backflush this transmission. There is no point since there are two replaceable filters in the design, and it will only cause problems from blasting the junk already in the filter back into the system.
- Simply doing a pan drop / filter change / fluid refill at some normal interval should suffice for just about all trucks.
I just changed mine at 52k may have been done once by previous owner but notsure. Fluid was still really red and unburnt. Used 10qts of adavanced auto parts ATF+4 and 1qt of lucas trans conditioner on just a pan drop.
once a year i'll drop the pan and do the filters, I also added a drain plug in the pan and a bung for a temp sensor probe. I use nothing but amsoil on my rigs .
i change fluid and filters every 25,000... at the recomendation of my transmission shop
as it is my daily driver at an 80 mile round trip to and from work at 3.74 a gallon 11.5 miles per gallon
^Actually, that is pretty much the preferred method. No worries.
I added a drain valve to my tranny pan for future changes; even if you're dropping the pan, it's much cleaner/easier to do it with the fluid drained first.
If the oil is not highly contaminated and it looks good for color, all I do is drop the pan and change the filter. Its the best way. I been doing this stuff since 1969. I have a problem with flushing anything, because most of the time stuff gets loosened up; that never would if you didn't mess with it. Then major problems.
03 1500 st 83000 just bought it plan to drop pan replace filter, and tranny fluid drained, i dont ever use machine just drain and refill and drive until next time doesnt hurt to mix new with old done it with a 2002 mazda 626
I bought my 08 Power Wagon in 2010 with 19,200 miles on it and changed the fluid at 30K miles. The fluid looked great but will continue doing every 30K even though I only put 5000 miles on it a year. You can service the heck out of the tranny and not even come close to the cost of replacing it, so I figure what the heck. But, what do I know……...
Bret
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