[HellRaiser92]

I was talking with a friend of mine today and he seems to think that putting 110 octane wont hurt a car that doesn't need it. He mentioned how he needed some for his car.

He said it isn't good for lawn mowers but it doesn't hurt cars at all. So I said well then if I put some in my little 4 banger it won't hurt it? I thought motors with low compression were not supposed to have such high octane levels of gas. And oh yeah what does happen if you put really high octane fuel in cars that don't need it?