# Trans fluid change overkill?

**URL:** <https://community.cartalk.com/t/trans-fluid-change-overkill/41740>\
**Category:** Maintenance/Repairs\
**Created:** [January 3, 2010, 1:39am UTC](https://community.cartalk.com/t/trans-fluid-change-overkill/41740 "2010-01-03T01:39:24Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Jeffmw05](https://avatars.discourse-cdn.com/v4/letter/j/74df32/32.png) [@Jeffmw05](https://community.cartalk.com/u/Jeffmw05)\
**Post date:** [January 3, 2010, 1:39am UTC](https://community.cartalk.com/t/trans-fluid-change-overkill/41740/1 "2010-01-03T01:39:24Z")

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Is it overkill to change transmission fluid every 15k?  
  
  
  
 I ask because at my rate of driving it would only be a once-per-year ordeal and in my car (99 Accord) it’s a simple drain & refill operation.  
  
  
  
 I know it can’t hurt anything, but does the law of diminishing returns come in to play here?

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**Author:** ![Docnick](https://avatars.discourse-cdn.com/v4/letter/d/ecae2f/32.png) [@Docnick](https://community.cartalk.com/u/Docnick)\
**Post date:** [January 3, 2010, 1:55am UTC](https://community.cartalk.com/t/trans-fluid-change-overkill/41740/2 "2010-01-03T01:55:07Z")

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Unless you are towing a trailer, 15,000 miles is probably too often. Most of us would recommend 30,000 miles. I’ve been doing this since 1965, and the transmissions have always outlasted the rest of the cars!

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**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\
**Post date:** [January 3, 2010, 2:37am UTC](https://community.cartalk.com/t/trans-fluid-change-overkill/41740/3 "2010-01-03T02:37:52Z")

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Yes, overkill, 30k is fine. Make sure you’re using the Honda-specified fluid, I understand they’re picky.

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**Author:** ![Jeffmw05](https://avatars.discourse-cdn.com/v4/letter/j/74df32/32.png) [@Jeffmw05](https://community.cartalk.com/u/Jeffmw05)\
**Post date:** [January 3, 2010, 6:26am UTC](https://community.cartalk.com/t/trans-fluid-change-overkill/41740/4 "2010-01-03T06:26:06Z")

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How about 20k, for peace of mind? I want this vehicle to last me a long, long time.

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**Author:** ![kmccune](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/kmccune/32/1237_2.png) [@kmccune](https://community.cartalk.com/u/kmccune)\
**Post date:** [January 3, 2010, 12:59pm UTC](https://community.cartalk.com/t/trans-fluid-change-overkill/41740/5 "2010-01-03T12:59:29Z")

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If it makes you feel, better do it(I do cost benefit now)-Kevin