# Gumout multi-system tune-up Vs Marvell Mystery Oil (MMO)?

**URL:** <https://community.cartalk.com/t/gumout-multi-system-tune-up-vs-marvell-mystery-oil-mmo/182869>\
**Category:** Maintenance/Repairs\
**Created:** [March 8, 2022, 4:39am UTC](https://community.cartalk.com/t/gumout-multi-system-tune-up-vs-marvell-mystery-oil-mmo/182869 "2022-03-08T04:39:19Z")\
**Posts on this page:** 4\
**Page:** 2

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**Author:** ![sciconf](https://avatars.discourse-cdn.com/v4/letter/s/919ad9/32.png) [@sciconf](https://community.cartalk.com/u/sciconf)\
**Post date:** [March 9, 2022, 3:57pm UTC](https://community.cartalk.com/t/gumout-multi-system-tune-up-vs-marvell-mystery-oil-mmo/182869/21 "2022-03-09T15:57:00Z")

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You guys rock. It is good to come hear and pick up ideas. Thanks a bunch.

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**Author:** ![Scrapyard-John](https://avatars.discourse-cdn.com/v4/letter/s/f6c823/32.png) [@Scrapyard-John](https://community.cartalk.com/u/Scrapyard-John)\
**Post date:** [March 9, 2022, 4:13pm UTC](https://community.cartalk.com/t/gumout-multi-system-tune-up-vs-marvell-mystery-oil-mmo/182869/22 "2022-03-09T16:13:21Z")

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If you decide you want to inject it into the intake through a vacuum line, use a little caution. You don’t really want to stall the engine when doing it. Just add a little at a time as the engine stays running. You’ll stall it if you get too aggressive with the amount you add.

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**Author:** ![sciconf](https://avatars.discourse-cdn.com/v4/letter/s/919ad9/32.png) [@sciconf](https://community.cartalk.com/u/sciconf)\
**Post date:** [March 9, 2022, 4:22pm UTC](https://community.cartalk.com/t/gumout-multi-system-tune-up-vs-marvell-mystery-oil-mmo/182869/23 "2022-03-09T16:22:52Z")

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Sure will do so. I will re-watch the posted video again.

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**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\
**Post date:** [March 11, 2022, 1:49pm UTC](https://community.cartalk.com/t/gumout-multi-system-tune-up-vs-marvell-mystery-oil-mmo/182869/24 "2022-03-11T13:49:36Z")

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![image](https://global.discourse-cdn.com/cartalk/original/3X/0/2/02444a05a42d89464b3609000fcef51eeb1adcd8.jpeg)

Note the can of Crisco! Cures in quote marks.

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