# Oil in the Transmission -BMW Z3-

**URL:** <https://community.cartalk.com/t/oil-in-the-transmission-bmw-z3/73651>\
**Category:** Maintenance/Repairs\
**Tags:** bmw\
**Created:** [July 21, 2012, 1:09am UTC](https://community.cartalk.com/t/oil-in-the-transmission-bmw-z3/73651 "2012-07-21T01:09:23Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![itsup2me](https://avatars.discourse-cdn.com/v4/letter/i/5e9695/32.png) [@itsup2me](https://community.cartalk.com/u/itsup2me)\
**Post date:** [July 21, 2012, 1:09am UTC](https://community.cartalk.com/t/oil-in-the-transmission-bmw-z3/73651/1 "2012-07-21T01:09:23Z")

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HELP!! My son put about 2 ounces of synthetic oil in the transmission fluid of a friend’s BMW (2002) Z3 2.5 liter. Can you help us on how to cope w/ this. We have not turned on the car. The plan for now is to drain all transmission fluid at the bottom and replace the fluid. But is there anything else we need to do?!?! Like ‘Flush it all out’ w/ something designed just for that! or something!!! According to a local mechanic that works on BMW, is ok! just drain it and replace the transmission fluid. Right now we’re trying to find out what kind of transmission fluid to buy, we went to an auto parts place, and somehow we were given the wrong fluid. But found out that NAPA has what we need. - clear

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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:** [July 21, 2012, 1:11am UTC](https://community.cartalk.com/t/oil-in-the-transmission-bmw-z3/73651/2 "2012-07-21T01:11:08Z")

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It’s an automatic?

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**Author:** ![keith](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/keith/32/5518_2.png) [@keith](https://community.cartalk.com/u/keith)\
**Post date:** [July 21, 2012, 1:59am UTC](https://community.cartalk.com/t/oil-in-the-transmission-bmw-z3/73651/3 "2012-07-21T01:59:34Z")

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Since you haven’t started it, just drain and refill. If you start it, then the oil will get up into the valve body and torque converter, then you will need to have a fluid exchange done on a machine made for that purpose.

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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:** [July 21, 2012, 2:01am UTC](https://community.cartalk.com/t/oil-in-the-transmission-bmw-z3/73651/4 "2012-07-21T02:01:56Z")

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What kind of synthetic oil? Engine oil? Transmission fluid? It’s very unllikely that 2 oz. (if that’s all it was) would harm anything, I would think. More details, please.

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**Author:** ![Caddyman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/caddyman/32/23_2.png) [@Caddyman](https://community.cartalk.com/u/Caddyman)\
**Post date:** [July 21, 2012, 2:35am UTC](https://community.cartalk.com/t/oil-in-the-transmission-bmw-z3/73651/5 "2012-07-21T02:35:26Z")

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If the amount involved is really 2 ounces, it won’t make any difference…Drive on and forget it ever happened…If it’s really 6 ounces or more, drain the tranny WITHOUT starting the engine…

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**Author:** ![transman618](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/transman618/32/24_2.png) [@transman618](https://community.cartalk.com/u/transman618)\
**Post date:** [July 21, 2012, 2:54am UTC](https://community.cartalk.com/t/oil-in-the-transmission-bmw-z3/73651/6 "2012-07-21T02:54:08Z")

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Not a problem. Wont hurt it.

transman