And don't believe anyone who tells you they have an additive that "makes
Dexron/Mercon Chrysler compatible" either. Stick with the real stuff.

"Gene Poon" > wrote in message
...
> James Goforth wrote:
>
>> What kind of ATF is to be used in a '90 Caravan 3.3 with the automatic
>> overdrive (604, I believe) transmission?
>> What happens if you put Dexron/Mercon in it (and what is the
>> difference between the fluids)?
>>
>
> Chrysler-spec ATF+3 or ATF+4.
>
> Dexron has different friction characteristics. If you use Dexron you will
> save a little bit of money, the different friction characteristics will
> cause the clutches and lockup converter to get grabbier and get damaged as
> the computer tries in vain to compensate for the non-spec fluid, and you
> then will pay about a hundred times more money than you saved by using
> Dexron in the first place, to get your transmission fixed.
>
> DON'T USE DEXRON in it.
>
> PERIOD.