Please help,
I know nothing about cars and have accidently put the wrong fuel in. The labels at the station were missing and it was only when the fill price was high that I realised..
I put Super unleaded (97 Octane) instead of unleaded (95 Octane) into a NIssan Micra, will this make a difference, or not?
Please help.

HOLY SHIT first tell me where you got 97 octane!

but seriously, no, 2 octane levels wont hurt it at all

God damn. putting higher octane obviously won't hurt... lower will though, i haven't heard of the car you're driving, i don't even know/think you'd need that 95 to begin with?

Putting higher octane in a car CAN in a few cars HURT the engine. But I would guess that youd have to increase octane by at lease 5 points to do any damage. Most cars do better with higher octane. Does your nissan's manual say "For best performance, use high octane"? My car takes regular unleaded (a syrupy 87 octane) but my gas cap says I can use higher octane for better performance.

Man, I wish the US got that kind of octane. The best you can find at the average gas station is 93, but there are a few that sell super high 100 octane at huge prices.

Originally posted by Fliquer
Putting higher octane in a car CAN in a few cars HURT the engine. But I would guess that youd have to increase octane by at lease 5 points to do any damage.

I've never heard of anything like this. Perhaps a little explaining?

Originally posted by BeEfCaKe


I've never heard of anything like this. Perhaps a little explaining?

Well, I for one know that the higher octane i put in my motorcycle the faster it causes its 538cc 4cyl air cooled engine to get hot. So putting something like 93 octane in it in the summer is not a safe idea.