Transmission - replaced fluid, got a weird sound

[mythrenegade]

I'm really sorry to post another transmission thread. I've spent the last 30 minutes or so searching, and I give up and I'm just gonna ask.

I drained the fluid on my transmission. Got about 5 quarts out. I expected only three, but got around five. It was _really_ watery and had no viscosity at all.

So I put in three and a half quarts of mobil synthetic ATF and a quart of trans-x (starting to slip shifting into 3rd, this has been really helpful in my van, decided to go for it).

It's hard to read the dipstick. I know that sounds stupid, but it's hard to tell what level the fluid is actually at. But it appears to be filled properly.

So, today I drove the car and when I shift into drive it makes this weird "oomph" sound. I can't describe it any other way. At first I thought it was the parking brake being engaged and just the car straining against the brake, but that wasn't it. It happens regardless, and every single time I put it in drive. Not in reverse, not in neutral, just in drive.

Any ideas? Too much fluid? Too little fluid? Wrong fluid? I don't want to toast my car because I did something stupid...

Joel

[Naru]

seems too less fluid for me.
BUT WAIT OTHERS ADVISE BECAUSE I M AUTO TRANNY NOOB!!!
when you did level of the tranX, did you do it when engine work?
did you have play whit the shift selector to all positions before?
did you wait have good engine temperature when doing it?

i have see level is pretty hard to do, but to do it proprely, need engine started, at good temperature, and use all gears positions.

hope that help you