# "High mileage" oil use

**URL:** <https://community.cartalk.com/t/high-mileage-oil-use/170039>\
**Category:** Maintenance/Repairs\
**Created:** [September 16, 2020, 8:15pm UTC](https://community.cartalk.com/t/high-mileage-oil-use/170039 "2020-09-16T20:15:16Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![melott](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/melott/32/10827_2.png) [@melott](https://community.cartalk.com/u/melott)\
**Post date:** [September 16, 2020, 8:15pm UTC](https://community.cartalk.com/t/high-mileage-oil-use/170039/1 "2020-09-16T20:15:16Z")

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My wife grabbed the wrong oil–got high mileage syn for the lawn mower instead of normal syn. So, I read somewhere that if you put high mleage oil in a car, you should never go back or you may suddenly have leaks due to shrunken seals. Is this true? Should I exchange this oil rather than use it in my mower?

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**Author:** ![Barkydog](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/barkydog/32/2470_2.png) [@Barkydog](https://community.cartalk.com/u/Barkydog)\
**Post date:** [September 16, 2020, 8:37pm UTC](https://community.cartalk.com/t/high-mileage-oil-use/170039/2 "2020-09-16T20:37:02Z")

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Personally I would not worry about it.

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**Author:** ![VOLVO-V70](https://avatars.discourse-cdn.com/v4/letter/v/8e8cbc/32.png) [@VOLVO-V70](https://community.cartalk.com/u/VOLVO-V70)\
**Post date:** [September 16, 2020, 8:42pm UTC](https://community.cartalk.com/t/high-mileage-oil-use/170039/3 "2020-09-16T20:42:51Z")

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If you are worried about it just exchange it . Of course I am like Mr. Barky and would just use it and put the proper stuff in next time.

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**Author:** ![bing](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bing/32/4619_2.png) [@bing](https://community.cartalk.com/u/bing)\
**Post date:** [September 16, 2020, 10:16pm UTC](https://community.cartalk.com/t/high-mileage-oil-use/170039/4 "2020-09-16T22:16:41Z")

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I don’t think I’ve hardly paid attention to whether it’s the green label or the gray or whatever. They just have too many choices. Not many seals there to worry about anyway.