It's not BAD for the motor, its just not helpful.Seth5.0 said:I forget to tell you guys , first time when I run two months ago I run on 93 octan and flow masters mufflers and I run 15.1 , second time when I run few weeks ago I use 93 ostan + booster + everything in sign ,and I run 14.9 , maybe octan booster is bad for my engine
I saw lower times and mph increase when I went from 93 to 98+NOS O/R Formula. Now I'm running Cam2, 107 octane, but I haven't gotten to the track with the 107 yet. But then again, I'm running a blower. I don't know how much NA, without high compression, will benefit from high octane.Seth5.0 said:I forget to tell you guys , first time when I run two months ago I run on 93 octan and flow masters mufflers and I run 15.1 , second time when I run few weeks ago I use 93 ostan + booster + everything in sign ,and I run 14.9 , maybe octan booster is bad for my engine
blk306 said:I saw lower times and mph increase when I went from 93 to 98+NOS O/R Formula. Now I'm running Cam2, 107 octane, but I haven't gotten to the track with the 107 yet. But then again, I'm running a blower. I don't know how much NA, without high compression, will benefit from high octane.
Pstatic said:All an octane rating is on gasoline is the fuels resistance to detonation. I use octane booster at the track on my supercharged car only as another layer of detonation protection. On newer cars, the engine might boost timing or lean out the air fuel ratio past stock points when you are running octane booster because of this increased detonation threshold, but that is the only way you will pick up horse power using it. On the road, use the gas that your car is tuned for. Anything better is just a sop for your car based paranoia... which is common among drivers of modded cars. This is the long way of saying it will not hurt your car.
Nosfurato said:I agree with just about everything said. However.. octane deals with the fuels resistance to burning actually. Detonation or pre-ignition are often created by hot spots within the cylinder. A higher octane fuel can help eleviate the problem of preignition on such an engine by 1.. a higher octane fuel requires more heat energy to ignite.. and 2. the flame front of a higher octane fuel progresses down the cylinder more slowly. We are talking fractions of a second here.. but thats all it takes.
Detonation is precisely what it says.. the fuel explodes.. rather than a steady downward burn. this is hard on piston rings.. main bearings. and in extreme cases.. the piston itself can fail.
Anyway... as stated above, newer cars have electronic knock sensors that pull timing out of the engine to limit spark knock. Our mustangs do not have this luxery.
The best fuel that you can use in your car.. is the lowest octane you can get away with.. without having detonation problems.
Too much octane will actually decrease the engines output.. due to the slower flame front within the cylinders.
anyway... run the lowest grade fuel your engine will tollerate.