Time to do the trans service on the 93 400e.

Anyone ever used synthetic ATF? I am a big proponent of synthetic oil, and wonder if the syn ATF is just as good.

Jack
93 400e

I too would like to know about using synthetic ATF like Mobil 1 for the 722.366 transmission in my 95 E420 with 78,000 miles. Has anyone used it for this tranny?

In addition to the synthetic choice, Valvoline & Pennzoil(probably others also) make a synthetic blend Trans. fluid that is rated higher than standard dino and might be a good choice for our older transmissions.

The reason I ask is that the mercedes service shop will not change my transmission fluid to synthetic. They say it's not recommended except for the newer electronic transmissions.

i have had mobile 1 synthetic in my 94 e320 trans (722.369) for 5k+ miles and have had no problems. I think the tranny shifts smoother, but that could be the $60 lighter wallet talking

As long as the fluid meets the specifications that MB puts out it will be fine.

__________________
Daily Driver: 02 E430 4MATIC
In the family: '03 E500 // '04 ML500 // 64 220SE

I've been using the Redline ATF with zero problems in the 40K miles it has been in the car. Also used it on my old 92' 190E 2.6....made a noticable difference in the smoothing out rough shifts in both cars.

SWEPCO ATF is also recommended by another 500E guy who was turned onto it from the Porsche 928 guys (same auto trannys). I will try that stuff at the next changing myself.

True, MB doesn't recommmend anything other than their approved stuff, which boils down to their liablity and warranty if there's an issue I believe....so a dealer would not be the place to go for a change to synthetic ATF.

__________________
Jim

1992 500E
2007 CLK63
2003 Audi RS6
2001 Audi allroad