Thread: Home and Auto Do you use premium gas?
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Old 11-10-2015, 12:48 AM   #47
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Quote:
Originally Posted by ChiefsFan1st View Post
Yep +1
And an fyi for anyone wondering, the way to know what octane a vehicle needs is by the compression ratio. As a rule of thumb, anything under an 11.5/1 ratio is just fine on 87 octane. That aint a set in stone number, but its a good ballpark
That rule does not apply if you have a car with forced induction. They have a lower compression ratio because they add boost. The higher the octane the better. (Assuming your air / fuel ratio is dialed in properly) In fact, insufficient or low octane can cause detonation, and then you can go BOOM!
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