# Swithing BACK to conventional oil from synthetic

**URL:** <https://forums.speedlife.net/t/swithing-back-to-conventional-oil-from-synthetic/21952>\
**Category:** NYSpeed Automotive\
**Created:** [December 21, 2006, 5:29am UTC](https://forums.speedlife.net/t/swithing-back-to-conventional-oil-from-synthetic/21952 "2006-12-21T05:29:20Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![Bacon](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bacon/32/7230_2.png) [@Bacon](https://forums.speedlife.net/u/Bacon)\
**Post date:** [December 21, 2006, 6:21am UTC](https://forums.speedlife.net/t/swithing-back-to-conventional-oil-from-synthetic/21952/6 "2006-12-21T06:21:58Z")

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> [@JustinH](#):
>
> Run the motorcraft 5w30 oil, its semi syn and under 2.50 a quart.

Somedude has been using that on his SHO for years now at near 230k miles with a turbo. There are no issues that you will see and it’s pointless on that motor to be dumping that money into oil when there are no issues using conventional oil with it. You can still just about eat off his valvetrain.

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