hi can anyone tell me what spark plug to put in my ossa mar 250 & the petrol mix

the bike hasn't been ran for 10 years and is rearing to go

spark plug - ngk b8es

petrol/oil mix - 30:1 {mineral 2 stroke oil}

according to my old 1970's manual , but with modern synthetic oil people mix oil/petrol anything from 50:1 to 100:1, also there could be a better spark plug you could use these days

hope this helps

I use an NGK plug BPR5ES in my Ossa and Opti2 oil @ 100 to 1. No fouled plugs, revs clean and no problems.