# Mechanic in a bottle

**URL:** <https://community.cartalk.com/t/mechanic-in-a-bottle/41721>\
**Category:** Maintenance/Repairs\
**Created:** [January 2, 2010, 9:54pm UTC](https://community.cartalk.com/t/mechanic-in-a-bottle/41721 "2010-01-02T21:54:49Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![rsmacca58](https://avatars.discourse-cdn.com/v4/letter/r/34f0e0/32.png) [@rsmacca58](https://community.cartalk.com/u/rsmacca58)\
**Post date:** [January 2, 2010, 9:54pm UTC](https://community.cartalk.com/t/mechanic-in-a-bottle/41721/1 "2010-01-02T21:54:49Z")

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Have a 96 Civic that doesn’t shift smoothly between 1st and 2nd. This is the second transmission with ~ 100K miles logged. Anyone had any luck with transmission additives that claim some improvement? I know its a stretch but wanted to see opinions if it even worth trying.

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**Author:** ![waterboy](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/waterboy/32/764_2.png) [@waterboy](https://community.cartalk.com/u/waterboy)\
**Post date:** [January 2, 2010, 9:59pm UTC](https://community.cartalk.com/t/mechanic-in-a-bottle/41721/2 "2010-01-02T21:59:46Z")

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Automatic or manual transmission?

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**Author:** ![Joseph\_E\_Meehan](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/joseph_e_meehan/32/21_2.png) [@Joseph\_E\_Meehan](https://community.cartalk.com/u/Joseph_E_Meehan)\
**Post date:** [January 3, 2010, 12:28am UTC](https://community.cartalk.com/t/mechanic-in-a-bottle/41721/3 "2010-01-03T00:28:18Z")

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What was the problem with the first transmission?

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**Author:** ![BustedKnuckles](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bustedknuckles/32/25_2.png) [@BustedKnuckles](https://community.cartalk.com/u/BustedKnuckles)\
**Post date:** [January 3, 2010, 12:41am UTC](https://community.cartalk.com/t/mechanic-in-a-bottle/41721/4 "2010-01-03T00:41:35Z")

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When was the last time the transmission fluid was changed? If never, that would be a good reason.

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**Author:** ![rsmacca58](https://avatars.discourse-cdn.com/v4/letter/r/34f0e0/32.png) [@rsmacca58](https://community.cartalk.com/u/rsmacca58)\
**Post date:** [January 3, 2010, 2:16am UTC](https://community.cartalk.com/t/mechanic-in-a-bottle/41721/5 "2010-01-03T02:16:48Z")

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Civic has 235K miles and I replaced the first automatic transmission at 142K. It was having problems shifting between 1st and 2nd as well. Transmission fluid is changed regularly with the last time at 220K.