# mobil 1 extended performance

**URL:** <https://forums.speedlife.net/t/mobil-1-extended-performance/13137>\
**Category:** NYSpeed Automotive\
**Created:** [June 10, 2006, 7:09am UTC](https://forums.speedlife.net/t/mobil-1-extended-performance/13137 "2006-06-10T07:09:50Z")\
**Posts on this page:** 1\
**Showing post:** 27

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**Author:** ![LAFENGAS](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/lafengas/32/7573_2.png) [@LAFENGAS](https://forums.speedlife.net/u/LAFENGAS)\
**Post date:** [June 13, 2006, 5:30am UTC](https://forums.speedlife.net/t/mobil-1-extended-performance/13137/27 "2006-06-13T05:30:39Z")

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There is usually an engineered factor of safety for products that hit the market. Since I can reason this out to potentially govern a human life, the standard factor of safety is 4 to 5 when human life is involved. (except planes, 1.5)

This leads me to believe my oil should be changed every 75,000 miles.

**so this is the correct answer:** every 74,999 miles is when you should change your oil.

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