could changing trans fluid and filter wipe out trans?

[deezelfromRofo]

Bought the truck with 133,000 on it. I want to change trans fluid and filter but I don't know if it's ever been changed before. I've had a couple of guys tell me that I could wipe it out by doing so. What do you guys think? I've got 158,000 on her now.

[TEX-NARDI]

Sometimes yes. @ 158,000 it might be a little dicey. Take a look @ the colour and smell. Light brown with a hint of burn smell, you should be o.k. I STRONGLY suggest using Lucas transmission treatment when changing the fluid. Dump the bottle in the bottem of the pan before bolting her up. ( Very, very thick stuff ) I've used it in every tranny I've owned, and their product works exactly as they say it does. Don't use any other type of over the counter crap, though. If your fluid is black and stinks badly, don't bother. Wait untill you got a problem, then yank her out.

[GreenF350]

Basically the story is....If it craps out when you change the fluid and filter it was on borrowed time anyway and was just waiting for the slightest thing to kill it. I would never hesitate to drop the pan and change the fluid/filter. (I guess you could say "That which does not kill it, only makes it stronger. Hahaha) I would however shy away from the back flush that some shops like to do without ever dropping the pan or changing the filter. That's my .02.
-Aaron

[deezelfromRofo]

the color is reddish brown and doesn't smell burnt at all. should be safe? by the way Tex I just added Lucas trans treatment along with some trans fluid recently. she was a little low. that stuff is thick like molasses!

[deezelfromRofo]

hey Green,you say roll the dice and change it? I just want peace of mind knowing that there is fresh fluid and filter in there. But I don't want to wipe out trans.

[TEX-NARDI]

Change away!

[GreenF350]

I'm kind of suprised no one else has chimed in. Usually there are people jumping all over to tell you if it craps out it was going to go any way. I can't promise anything, but I know if it was mine I would be doing it now, before it smelled burnt and anything got any worse. FWIW my trans made it to 134,000 before it went out (about 2,000 miles after I bought it.) well, I think it was actually the torque converter, but I bit the bullet and got ALL new Suncoast parts. I don't think the guy that owned it before me ever changed the fluid (it was reddish brown and DID smell burnt) and it went before I could get it changed.
-Aaron

[95dieselsmoke]

I changed fluid(dropped pan) and replaced filter... started truck... didnt move. maybe just a freak thing, but now I have a failed TC and tranny pump.

[Ryan Rønning]

I havent changed mine but mine started acting weird today. I have a thread on it if anyone thinks that they can help!

[19558077]

i was going to have mine flushed, but read a thread couple days ago that advised not to. just to have the filter and fluid changed. they said that power flushing it was not good for these tranny's i always thought it was good to have it flushed to get all the crap out of the converter, and modulator valve