# What synthetic oil do you run?

**URL:** <https://forums.speedlife.net/t/what-synthetic-oil-do-you-run/80268>\
**Category:** SON240sx Automotive\
**Created:** [November 12, 2003, 9:06pm UTC](https://forums.speedlife.net/t/what-synthetic-oil-do-you-run/80268 "2003-11-12T21:06:06Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![Gonad](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/gonad/32/5481_2.png) [@Gonad](https://forums.speedlife.net/u/Gonad)\
**Post date:** [November 12, 2003, 9:06pm UTC](https://forums.speedlife.net/t/what-synthetic-oil-do-you-run/80268/1 "2003-11-12T21:06:06Z")

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Well this witner I’m gonna be putting in 5w30 Castrol GTX (regular), but  
come spring/summer, I wanna switch to synthetic.

I’m thinking of switching to Amsoil synethetic. It’s expensive, but will  
it be really worth it? I mean, will a KA really benefit from such an oil?

Other options are Mobil 1 or Royal Purple.

I’ll need the KA for next year, but like everyone else, I wanna get an SR eventually. 🙂

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**Author:** ![iQuAGoD](https://avatars.discourse-cdn.com/v4/letter/i/f05b48/32.png) [@iQuAGoD](https://forums.speedlife.net/u/iQuAGoD)\
**Post date:** [November 12, 2003, 10:01pm UTC](https://forums.speedlife.net/t/what-synthetic-oil-do-you-run/80268/2 "2003-11-12T22:01:00Z")

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5w50 castrol syntec right now (thanks sasha)… i had mobil 10w30 but i want a 5w for the winter in the SR

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**Author:** ![boMex](https://avatars.discourse-cdn.com/v4/letter/b/7bcc69/32.png) [@boMex](https://forums.speedlife.net/u/boMex)\
**Post date:** [November 12, 2003, 11:22pm UTC](https://forums.speedlife.net/t/what-synthetic-oil-do-you-run/80268/3 "2003-11-12T23:22:49Z")

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syntec…was 10w30 but don’t know now

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**Author:** ![Sasha\_SG](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sasha_sg/32/5477_2.png) [@Sasha\_SG](https://forums.speedlife.net/u/Sasha_SG)\
**Post date:** [November 13, 2003, 5:28am UTC](https://forums.speedlife.net/t/what-synthetic-oil-do-you-run/80268/4 "2003-11-13T05:28:45Z")

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5w50 castrol

np dude

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**Author:** ![ADAM](https://avatars.discourse-cdn.com/v4/letter/a/4af34b/32.png) [@ADAM](https://forums.speedlife.net/u/ADAM)\
**Post date:** [November 13, 2003, 5:52am UTC](https://forums.speedlife.net/t/what-synthetic-oil-do-you-run/80268/5 "2003-11-13T05:52:01Z")

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castrol syntec

or mobil 1

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**Author:** ![Pavel](https://avatars.discourse-cdn.com/v4/letter/p/a4c791/32.png) [@Pavel](https://forums.speedlife.net/u/Pavel)\
**Post date:** [November 13, 2003, 11:30am UTC](https://forums.speedlife.net/t/what-synthetic-oil-do-you-run/80268/6 "2003-11-13T11:30:47Z")

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Castrol Syntec 5w30

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**Author:** ![SHIFT\_KA24DET](https://avatars.discourse-cdn.com/v4/letter/s/b9bd4f/32.png) [@SHIFT\_KA24DET](https://forums.speedlife.net/u/SHIFT_KA24DET)\
**Post date:** [November 13, 2003, 11:58am UTC](https://forums.speedlife.net/t/what-synthetic-oil-do-you-run/80268/7 "2003-11-13T11:58:13Z")

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Id only run sythetic in my KA if i got it for free or if it cost the same as Conventional Oil.  
Theres no point in running it unless your on the track at least once a week, or used it since day one.  
I just use 5w30 in the winter and 5w50 in the summer.

Take a gander at this guys you might find it interesting.

[http://forums.son240sx.ca/viewtopic.php?t=1976](http://forums.son240sx.ca/viewtopic.php?t=1976)