Bowserman

Thanks everyone. have bought a Suzuki GS550E and the owner has been running it on E5, so I will continue with that.

Hi. 64 year old looking to get a bike to play with on nice days only. After a 1970's Jap machine around 500-750cc. All I have had when I was younger was a Yamaha DT125 and a Suzuki 250. What modern fuel is everyone using in the old bikes, and what issues does it cause?