E1-11EMU01804GASOLINEIf knocking or pinging occurs, use a differ-ent brand of gasoline or premium unleadedfuel.Recommended gasoline:Regular unleaded gasoline with aminimum octane rating of 86(Pump Octane Number) = (R+M)/2EMU00027GasoholThere are two types of gasohol: gasoholcontaining ethanol and that containingmethanol. Gasohol containing ethanol canbe used if ethanol content does not exceed10% and the fuel meets minimum octaneratings. Gasohol containing methanol is notrecommended by Yamaha because it cancause fuel system damage or engine per-formance problems.EMU00858ENGINE OILIf the recommended engine oil is not avail-able, another 2-stroke engine oil with aNMMA-certified TC-W3 rating may be used.Recommended engine oil:YAMALUBE 2 STROKE OUTBOARD OIL

Yamaha VX250B Owner's Manual