Wrong fluid cause hard shift?

[____]

I fixed a transmission leak a week ago on my 2000 and now it is shifting kind of hard (not real hard but enough to notice the difference from before). Could this be because I added about 2 quarts of Dexron/Mercon generic "coastal" autozone fluid (had it on hand) to replace lost fluid instead of going and getting some Mercon V?

[wiswind]

I cannot imagine that 2 quarts of mercon would cause that...but I could be wrong.
FORD came out with Mercon V to correct transmission "shudder" that came up on some transmissions with Mercon.
Take note that the fluid should be changed at least every 30K miles.

[lewisnc100]

I'd bet it has more to do with the fluid level. There is a TSB on your year Windstar that calls for the fluid to be near the top of the hash on the dipstick to avoid harsh shifts.

[____]

Yeah, I thought it was unlikely but really needed a second opinion. Thanks. The leak was coming from the low/intermediate servo cover. I had to pull the cover and the gadgetry behind it to repair a stripped thread. Seemed to go smoothly though. But now this hard shifting.

Any other ideas on a cause?

Thanks alot!

[____]

Originally Posted by lewisnc100

I'd bet it has more to do with the fluid level. There is a TSB on your year Windstar that calls for the fluid to be near the top of the hash on the dipstick to avoid harsh shifts.

Will check that immediately. Thanks!