Dramatic_Hammer-
Always have done in mine and now my 750. It’s pence more per tank
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Idk.
I almost always put it in my 900, just because.
There have been a couple of occasions where I needed fuel and had no option so I topped up with enough to get me to premium petrol station. I didn't notice a massive difference - or enough that I could definitively say it wasn't psychosomatic - but it's not ££££s like a 50l car tank, so I've continued with premium.
On my 125cc it was 100% noticeable. It simply ran better in every way.
Someone with plenty of bike years advised me to use better fuel and was the one that told me the smaller the engine the more important it was. Once I tried it, switched to regular to double check, then switched back to premium I never used anything else in that bike.
Fwiw there was also a noticeable difference if the tank was running low, so I'd try to keep >¼ of a tank. So on balance I've assumed smaller engines to at least "feedback" their grumbles more to the rider, or possibly just be more sensitive to any performance enhancements.
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No, apart from in Europe.
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PhilDAS
hugo7
lynx
Oh, just realised you said unleaded.
He shouldn't be using regular unleaded - always premium fuel from a proper petrol station - Esso, Shell, etc. not a supermarket.
Small engines are much more sensitive IME. The economy on that bike will be nuts, so he's probably looking at £2-3p/m extra for the better fuel.
Personally I'd be tempted to get a manual suction pump, remove fuel and replace with some premium to see if that helps.
Edit: I'd add checking some of the obvious random things that you might forget on a new bike: