Return to the Cars Forum | Post a Follow-Up

What happens if you overfill the auto tranny

Posted by poohbear2767 (My Page) on
Sat, Feb 17, 07 at 20:39

1997 Ford Escort Sedan.
What happens if you overfill the automatic transmission.
Yesterday I checked the fluid and it needed some.
I poured half a quart in and it looked like it still
needed some. So I poured the rest of the quart in but
when I tried to check it I couldn't get a good reading.
I think after filling there was still a lot of fluid
inside the dipstick tube and when I pulled the stick out
it was covered with fluid. I meant to check it again when
I got home yesterday but forgot. I figured by then any
fluid in the tube would have had time to drain down.

If by chance I overfilled it what damage could it do.
Apparently I have a very slow leak since I had to add fluid
a few months ago. If I overfilled it how can I remove some.
Crawling under it to remove the pan is not an option for me.


Pooh Bear

Follow-Up Postings:

RE: What happens if you overfill the auto tranny

The two concerns I know about are if it's too full, the fluid can foam. Air bubbles in any hydraulic system isn't a good thing. The other thing is if you have a gasket or seal leak, it will leak more. I doubt you did anything to hurt it yet. Park your vehicle on a level surface and check it again taking into consideration if the fluid is hot, cold, or warm. If it is too full, siphon some out. No big deal.

RE: What happens if you overfill the auto tranny

I checked it today after driving about 75 miles.

The dipstick has 4 notches on it.
Between the lower 2 is a notation of 20 degrees celcius.
Between the upper 2 is a notation of 65 degrees celcius.
The level appeared to be right at the lowest mark.
Shouldn't it have been between the upper two marks?

I'm assuming the bottom 2 marks are the fluid level cold
and the upper 2 marks are the fluid level at operating temperature.

Thanks for the info.

Pooh Bear

 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!

Return to the Cars Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.

Learn more about in-text links on this page here