# 1991 Ford Tempo - Mixing brake fluid

**URL:** <https://community.cartalk.com/t/1991-ford-tempo-mixing-brake-fluid/147962>\
**Category:** Maintenance/Repairs\
**Tags:** ford\
**Created:** [September 2, 2019, 12:33am UTC](https://community.cartalk.com/t/1991-ford-tempo-mixing-brake-fluid/147962 "2019-09-02T00:33:21Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![JimInman](https://avatars.discourse-cdn.com/v4/letter/j/96bed5/32.png) [@JimInman](https://community.cartalk.com/u/JimInman)\
**Post date:** [September 2, 2019, 12:33am UTC](https://community.cartalk.com/t/1991-ford-tempo-mixing-brake-fluid/147962/1 "2019-09-02T00:33:21Z")

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is it advisable or safe to mix conventional brake fluid with synthetic brake fluid?

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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 2, 2019, 1:01am UTC](https://community.cartalk.com/t/1991-ford-tempo-mixing-brake-fluid/147962/2 "2019-09-02T01:01:36Z")

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In your manual it should list what kind of brake fluid to use and that is all that I would use. Mixing the two just does not seem the right thing to do . And probably this vehicle is due for a fluid exchange and if it leaking fluid then that needs to be taken care of.

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**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [September 2, 2019, 1:05pm UTC](https://community.cartalk.com/t/1991-ford-tempo-mixing-brake-fluid/147962/3 "2019-09-02T13:05:45Z")

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Yes, you can mix synthetic with conventional. You should not use DOT 5 fluid at all. You can use DOT 3, 4 or 5.1 synthetic or conventional.

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**Author:** ![JimInman](https://avatars.discourse-cdn.com/v4/letter/j/96bed5/32.png) [@JimInman](https://community.cartalk.com/u/JimInman)\
**Post date:** [September 3, 2019, 1:19am UTC](https://community.cartalk.com/t/1991-ford-tempo-mixing-brake-fluid/147962/4 "2019-09-03T01:19:53Z")

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Mustangman,  
Thank you very much for your advice.  
I’m currently working on a 1962 Falcon and the only type of brake fluid on the shelf is synthetic, hence my question.  
Have a good day.  
Jim

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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:** [September 3, 2019, 1:20am UTC](https://community.cartalk.com/t/1991-ford-tempo-mixing-brake-fluid/147962/5 "2019-09-03T01:20:58Z")

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Ok or not, I’d replace it 100%. Why not?

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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 3, 2019, 1:28am UTC](https://community.cartalk.com/t/1991-ford-tempo-mixing-brake-fluid/147962/6 "2019-09-03T01:28:30Z")

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> [@JimInman](#):
>
> I’m currently working on a 1962 Falcon

People have been replying to your question as if you had a 1991 Tempo . So a 1962 Falcon never had synthetic brake fluid . So you need to find out just what you need and replace all of the fluid .  
And what shelf only has synthetic on it ?