Any recommendations on a high mileage transmission fluid?

[Maxxpags]

2011 P4X with 203,000 miles on it, not having any “real” issues with it but it gets a slip every now and then if the fluid is hot & driving on the highway and have to kick it down to pass or whatever. I have drained the little pan (2 or 3 quarts) & put the same amount- yes, the correct fluid-, back in several times since I have owned it. I would just feel better if I added something good for high mileage transmissions. No leaks or anything. Any recommendations?

 

[RikRong]

While I don't have the mileage you do. I've had good luck with AMSOIL products.

 

[Maxxpags]

just highway drove for 1 hour & when I parked it I checked the trans fluid, it’s just a tic above the top of the hot range, that should not matter, correct?

 

[relentless044]

so long as its not drastically over full it shouldn't hurt, you can try a fluid change, but if its already starting to slip probably best to start saving for the rebuild

 

[Maxxpags]

Ya, at 202,000 miles it’s inevitable I suppose. I got it with 174,000 & whoever owned it for those miles definitely took care of oil changes & even the first time I did that small trans pan drain and refill it looked pretty good, they just drove the hell out of it.

 

[MisterH]

I don't know. My Gen 1 every few years it gets changed. I look at the fluid and tell how it feels shifting. Drained, filled, and a new filter. My Gen 1 is at 300k for mileage. I always drive into the gears and never force it to shift.