27th Nov 2018, 18:37
I know this comment is now 7 years old. But it's irksome. Cars don't get better horsepower with higher octane fuel, but rather they lose horsepower with lower octane fuel. The computer self-adjusts to prevent engine knocking by adjusting compression, thereby losing horsepower. If a car is tuned and recommended to use 87 octane, the computer will not magically raise compression to compensate for higher octane. This is where the myth resides.
12th May 2011, 12:58
Listen, if it makes you happy to spend more on gas for nothing, then so be it. I have never gained anything by running any higher grade of gas in my cars unless they required it. I will never purchase a car that requires more than regular gas ever again, and it is just a waste of good money to up your gas grade to something above the recommended level. 30 cents per gallon is about $5 per the average fill up. At around 50 fill ups per year, that is $250 out the window. In this economy I could do more with that money. Guess some people still have money to burn... literally.
Ever think that maybe, just maybe the sources you rely on for your data are out to make an extra buck off of you? The stories I have read on the subject all say the same thing, and they have nothing to gain in talking me out of spending more money on gas! I have read countless stories on this subject.
As far as race cars... they are much higher compression and are tuned to run specific octane fuels. They have nothing to do with street cars or what type of fuel you run in them. Also, cars like the Mustang 5.0 of today do gain extra power when you up the grade of gas, but they are designed to adapt to the different grade without damaging the engine, unlike the average car.
Do what you want. You obviously think you are gaining something. Maybe you should just buy better vehicles that run perfect on regular gas? What you choose to do has absolutely no effect on me whatsoever. I am not the one spending the extra money. Really, I could care less other than trying to pass along my experiences and the information I have gathered on the subject, so the average person doesn't waste unnecessary cash on this. Have a nice day.