# SR20 oil viscosity

**URL:** <https://forums.speedlife.net/t/sr20-oil-viscosity/97989>\
**Category:** SON240sx Automotive\
**Created:** [July 16, 2006, 7:12pm UTC](https://forums.speedlife.net/t/sr20-oil-viscosity/97989 "2006-07-16T19:12:45Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Fitzy](https://avatars.discourse-cdn.com/v4/letter/f/7ba0ec/32.png) [@Fitzy](https://forums.speedlife.net/u/Fitzy)\
**Post date:** [July 16, 2006, 7:12pm UTC](https://forums.speedlife.net/t/sr20-oil-viscosity/97989/1 "2006-07-16T19:12:45Z")

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Simple question, what viscosity oil to use on a S13 redtop.

Fitzy

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**Author:** ![Jedi\_Car\_Fan](https://avatars.discourse-cdn.com/v4/letter/j/b9e5f3/32.png) [@Jedi\_Car\_Fan](https://forums.speedlife.net/u/Jedi_Car_Fan)\
**Post date:** [July 16, 2006, 7:16pm UTC](https://forums.speedlife.net/t/sr20-oil-viscosity/97989/2 "2006-07-16T19:16:58Z")

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well FSM says 10w30 but run whatever the hell you want…

if you search the forum you’ll notice it varys " some run 10w30, some run 5w30, some run 15w50" and so forth

it can be a personal preference i suppose