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Can anyone explain why premium(93) cost $0.65 more/ gallon ? It seems really high compared for regular (87)
0.65*13 gallons = $8.45 / fill up
I know my car is high compression, and I have to buy (93)
Eric has a good video : Octane Ratings Explained – Eric The Car Guy
Did anyone experiment with regular(87)+octane booster for $7-8
The bottle says it will treat 30 gallons of gas, so if I can fill up (87)+ 1/2 bottle = less than (93)
But I don`t want to try it and find out octane booster is a big scam and I will damage my engine .
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Unless you’re running a hopped up engine with say, 9.5:1 compression ratio and higher (maybe even bring that number down some for regular passenger vehicles) or if your engine has forced induction, anything higher than 87 is completely useless and a waste of money. Octane rating is used to indicate how hard it can be squeezed before it auto-ignites. Nothing to do with cleanliness or performance or quality etc. It’s a hugely common misconception about that. If anything, in a regular car, it MAY kinda-sorta hurt performance because it actually burns slower than 87 octane. A lower octane rating is more volatile, until you squeeze the hi octane stuff super hard (a common old school performance upgrade is flat top pistons, for example), then when it ignites, it’s more explosive.
Don’t waste your money. The only thing this will hurt is your wallet. B)
In Australia we have 94 E10. 95, 98, diesel and LPG and some stations do E85.
I use 95 in my impreza, I had issues with E10 in my civic(when coming to the lights the RPM would drop down to 500 at times), these issues went away with the switch to 95.Plus you use more petrol when you run E10 compared to 95.
E10 is the cheapest
95 is about 8cents more or so
98 is 25cents more than E10But this does depend on the fuel cycle and current oil pricing
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