[throwedoff]

Long story short, the car has 120k miles on it's automatic and the fluid has never been changed.

I've heard from several places that it can do more harm than good to change the fluid if it's never been changed in that amount of time. I always thought this was a myth, but a few transmission shops have told me this.

If I do get it changed, should I just get a change or a complete flush?

[OTreborO]

You will be rebuilding it soon anyway, so wait till then

[throwedoff]

Originally Posted by OTreborO You will be rebuilding it soon anyway, so wait till then

Yeah yeah, I know, not smart to go 120k miles without changing tranny fluid, but to be fair, a woman who knew nothing about cars owned the car for 100k miles before me.

I'd like to prolong the life if possible though.

[homebrewed]

If ya get the flush, do it all. Get a "force flush" an have 'em throw some BG trans conditioner in it. And change the filter and seal...


You are correct about the more harm than good. The fluid thats in there acts kinda like a varnish and keeps things slippin' an slidin' like they need ta be. With that amount of mileage on it, things are kinda set in their ways and you can run the risk of upsetting the balance of nature, as it were lol...

[throwedoff]

Originally Posted by homebrewed If ya get the flush, do it all. Get a "force flush" an have 'em throw some BG trans conditioner in it. And change the filter and seal... You are correct about the more harm than good. The fluid thats in there acts kinda like a varnish and keeps things slippin' an slidin' like they need ta be. With that amount of mileage on it, things are kinda set in their ways and you can run the risk of upsetting the balance of nature, as it were lol...

So would it be worth it to get a force flush, or should I not worry about it?

[homebrewed]

If it ain't slippin' now, and it seems to shift when its suposed to, leave it alone.

One thing you might consider is adding the BG treatment. That stuff is amazing...

[throwedoff]

Originally Posted by homebrewed If it ain't slippin' now, and it seems to shift when its suposed to, leave it alone. One thing you might consider is adding the BG treatment. That stuff is amazing...

Doesn't seem to be slipping now, and my shifts still feel damn near perfect.

I'll definitely look into the BG treatment, thanks for the tip!


Edit: What BG product are you talking about? BG ATC Plus?

[Juggalo_X]

Originally Posted by throwedoff Long story short, the car has 120k miles on it's automatic and the fluid has never been changed. I've heard from several places that it can do more harm than good to change the fluid if it's never been changed in that amount of time. I always thought this was a myth, but a few transmission shops have told me this. If I do get it changed, should I just get a change or a complete flush?

i would not change it at this point you have let it go to long. They are correct in not recommending a change, the reason behind this is that your tranny has worn its self and the friction its creating is now actually helping it rather then harming it. If you flush the fluid now you may find that youve reduced the friction and that the tranny will develop a severe slip. The new tranny fluid will also probably cause a seal leak at this point if there isnt already one present. Transmission fluid has a high detergent quality to it.

[Katen]

If it ain't slippin' now, and it seems to shift when its suposed to, leave it alone.

that is not a smart thing to do. also the myth is wrong it will not hurt your tranny, you just need to get it completly flushed. then have the cvi reset. the tranny will then relearn how you drive an how much fluid will go throught the cvi.

[Juggalo_X]

Originally Posted by Katen If it ain't slippin' now, and it seems to shift when its suposed to, leave it alone. that is not a smart thing to do. also the myth is wrong it will not hurt your tranny, you just need to get it completly flushed. then have the cvi reset. the tranny will then relearn how you drive an how much fluid will go throught the cvi.

no its not a myth, i had a ford transmission technician tell me not to change the tranny fluid in my tempo because i let it go for almost 200k said it would probably cause alot of problems. so i did it any ways. and yes it slipped alot. the reason was the valve body was so worn from the old fluid and it has gummed up so it was functioning properly, as soon as i changed the fluid all the gunk and varnish was washed away by the new fluid and instant issues arose. lucky me we stole the tranny from my buddies topaz and then i retired the beast.

[Katen]

but their is a 100k differeance. so it didnt work for you but it could work for the whom ever started the topic.