I just had my 2003 Durango in the shop for my transmission service. I don't go to the dealership due to many instances of bad advice and lies I have had over time. Anyway, they used this Valvoline Maxlife in my transmission. I asked him why this instead of the ATF +4 and he said that this is basically the same stuff! Valvoline makes the fluid for DC. I need to know what you knowledgable people think about this. I grabbed a bottle and it said on there that it was ATF +4 compatible. I would really like your insight on this Valvoline. Thanks in advance.