# Think twice about that transmission flush

**URL:** <https://community.cartalk.com/t/think-twice-about-that-transmission-flush/88878>\
**Category:** Maintenance/Repairs\
**Created:** [January 30, 2015, 11:00am UTC](https://community.cartalk.com/t/think-twice-about-that-transmission-flush/88878 "2015-01-30T11:00:25Z")\
**Posts on this page:** 1\
**Page:** 2

<div class="post-metadata">

**Author:** ![oldtimer-11](https://avatars.discourse-cdn.com/v4/letter/o/e79b87/32.png) [@oldtimer-11](https://community.cartalk.com/u/oldtimer-11)\
**Post date:** [February 2, 2015, 2:56am UTC](https://community.cartalk.com/t/think-twice-about-that-transmission-flush/88878/21 "2015-02-02T02:56:57Z")

</div>

Does it make any difference what spec ATF you use,yes it does. Even before synthetics it did.

My son in law had a full size Dodge Van that called for ATF+3. He has a leaking transmission and stopped at a store to get 2 quarts of transmission fluid. He didn’t find any ATF+3 on the shelves so he bought a generic dexron equivalent. The van didn’t quite make it a mile before it was slipping so badly it wouldn’t move but it was still full on the stick. I came and got him with 5 quarts of ATF+4 ,which had replaced ATF+3 , a drain pan , funnels and empty jugs , We drained and refilled the tranny and tightened the clamp on the neoprene line connecting the hard lines to the transmission cooler.

Problem solved.

[Previous page](https://community.cartalk.com/t/think-twice-about-that-transmission-flush/88878.md?page=1)