Gas octane

04blasterdude

Member
Feb 22, 2017
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This is kind've a dumb question but I want to know what gas octane you use and what I should use. Stock motor including piston and never checked psi. Full FMF exhaust and I run 87 mixed 40:1 with Klotz supertechniplate
 
Run the highest available. Out here in Arizona, 91 is the highest we get at the pump. 87 I believe is about $2.15/Gallon, while 91 is close to $2.50. The higher the octane, the less chance of detonation. If you think about it, your tank holds a little more than 2/gallons? The price difference to run that octane is $.80 cents. Well worth it.

Before you fill up the gas can, put a little more then 1 gallon in your car first before you start filling the can. theres a good chance the person before you bought 87. You don't wanna pay for 91 if half the gas that comes out is 87
 
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