# 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:** 32

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**Author:** ![rj-92](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/rj-92/32/7310_2.png) [@rj-92](https://forums.speedlife.net/u/rj-92)\
**Post date:** [December 21, 2006, 7:25pm UTC](https://forums.speedlife.net/t/swithing-back-to-conventional-oil-from-synthetic/21952/32 "2006-12-21T19:25:57Z")

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Why waste your $$ No need for synthetic in your car. Given your driving habits, dyno oil is more than good. I run 10w-30 Castrol GTX in my SHO and always have. Regular change intervals are 2500 - 3500 miles given driving conditions. I also have an oil temp gauge and if i’m tracking the car or its seeing frequent high temps 2k. Haven’thad a problem ever. IMHO, I think changing your oil 5000 miles or more isn’t the best idea regardless of what kind of oil you use. Mine has plenty of grime in it after 3k.

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