View Full Version : telling the difference between Dexron & ATF 4?

July 25th, 2010, 15:20
In my 98 I do not know what what was put in my trans since I purchased it used, is there away to tell the difference between Dexron and ATF??

July 25th, 2010, 16:34
Just to clarify, Dexron is ATF. Assume you are trying to differentiate between Dexron III and Chrysler ATF+4.

From the standpoint of adding fluid, it doesn't matter which is in there. As for changing fluid, you can read the endless threads on the forum and form your own opinion. I believe the latest one was about two weeks ago -- just search "dexron" in the OEM tech forum.

A readily available full synthetic I use is Valvoline High Mileage.

July 25th, 2010, 21:09
ATF = automatic transmission fluid

It might be wise for you to do a poor man's flush and replace all 12-13 quarts.