2007 Accord Coupe EX I4
Join Date: Mar 2011
Location: South Carolina
Thanked 41 Times in 39 Posts
Hey Mujambo, about the octane. It's just a rating of the fuel's purity. The lower the octane, the more dirt and other impurities are in the mixture; the higher, the "cleaner" the gas. It's a little more complicated than that, but that's the simple jist.
That comment about burning hotter and all has SOME truth to it, but let's be real, when your engine is operating at 2, 300 degrees, the difference in temperature between two fuels that are only 6 octane (87 and 93) apart is not going to be significant. If it is, than you are being cheated and that "87" sticker should read lower! You only need to worry about melting your engine when they start dumping unnecessary amounts of ethanol into our everyday gas. That is what will burn a non-flexfuel engine out.
I just bought my '07 coupe a few weeks ago and the salesman gave us a tank of gas (I am assuming 87 octane) and the engine felt like it was misfiring, struggling, and I immediately pulled an O2 sensor code. I would give it a little throttle and it would hesitate for almost half a second. I ran premium and mid-grade for a few weeks and it is much better. Probably still going to change the sensor though.
Better fuels can potentially increase fuel economy, increase horsepower, and decrease build-up in the internals. Hope that is helpful!
2007 Accord Coupe EX 5MT - Nighthawk Black Pearl