Transmission fluid and filter change

[LUMINATOR]

I have a 1990 Chevy Lumina with the 3.1, automatic. The car has been shifting hard into overdrive and I've been thinking about doing a fluid and filter change on it. The car has 102,000 miles on it, Not sure if I should change it or not

 

Also has anyone used the products Trans tune from sea foam or Lucas oil transmission fix in any of there transmission do these products work?

[RobertISaar]

don't stick anything other than dex2/dex3 or dex6 trans fluid in your transmission. everything else is a crapshoot as to whether it will fix an issue or cause immediate and total failure.

 

do yourself a favor and change out the filter/fluid now, rather than when it's an obvious issue.

[LUMINATOR]

Thanks for getting back to me RobertlSaar! I checked the transmission fluid today after driving it for a while. It was full but I saw some bubbles on the dip stick, is that a bad sign?

 

Ok I will stay away from the transmission additives, and yes I think I will plan on doing a filter and fluid change here soon!

[19Cutlass94]

If you can afford it, use dex6. That stuff is miles ahead of dex3.

 

 

Sent from my iPhone in some random spot of Texas.

[RobertISaar]

small amounts of bubbling isn't that abnormal... it's if the filter sucks up air bubbles(meaning lots of bubbles/foaming) is where there will be problems.

[LUMINATOR]

So is the dex6 a lot better fluid than the dex3? And would it be fine to use it in a 1990 Chevy Lumina with a 3.1 in it?

[LUMINATOR]

alright thanks appreciate it!