When discussions come up about running gasoline that's higher octane than what's recommended in the owners' manual, it seems like some people are of the opinion that it's fine, but some say it can cause problems. What's the real scoop on this when it comes to late model cars with EFI, knock sensors, and computer controlled spark timing with coil-on-plug ignition?
My car's manual recommends 87 octane, but it's got a relatively small engine with a 10.5:1 compression ratio. I'm curious as to whether I'd see any benefits in power or smoothness running higher octane for a while, but I don't want to experiment too much unless I know it's safe.
My car's manual recommends 87 octane, but it's got a relatively small engine with a 10.5:1 compression ratio. I'm curious as to whether I'd see any benefits in power or smoothness running higher octane for a while, but I don't want to experiment too much unless I know it's safe.