synthetic transmission fluid

Is it alright to use synthetic ATF+4 fluid in a newly rebuilt transmission rather than the regular ATF+4 transmission fluid?

You'd better check with the dealer on that one. Those trannies are so dang finicky that I'd want to be darn sure before I tried anything but what is required.

I know what the dealer will say, they will always push their products no matter what.

I cannot imagine Valvoline making a synthetic ATF+4 transmission fluid that would mess the transmission up. Really hard to find out if there is even an advantage in synthetic over regular fluid?

Went to Wal-Mart and they had Mopar ATF+4 synthetic fluid. Didn't know Mopar used synthetic fluid but it was manufactured by Chrysler. So, I guess synthetic is fine on a rebuild, but you would have to completely drain the tranny and torque converter to change over to synthetic because I would not mix the two.

Went to Wal-Mart and they had Mopar ATF+4 synthetic fluid. Didn't know Mopar used synthetic fluid but it was manufactured by Chrysler. So, I guess synthetic is fine on a rebuild, but you would have to completely drain the tranny and torque converter to change over to synthetic because I would not mix the two.


Correct. You might check the data on http://www.bobistheoilguy.com/.
There should be all the info you need.

Let us know what you find out.

Carquest sells it too with Carquest's name on the bottle.Read on the dipstick how to check it,some you check in Neutral and some in park.

FYI all ATF+4 is synthetic. That's one reason Chrysler transmission life has improved lately. The other reason is that transmission coolers have been added.