我的问题是无铅汽油会伤害我的电机吗？我还没有破解它，不要't plan on it unless needed. But I was under the impression that, in cars and trucks made back in the day, that if the block was original that the bearings and valves have to be changed out so unleaded gas can be burnt in the engine. Supposedly, the leaded gas helped with the cushion of the bearings on the crank. Is this the same with my old CB350 twin? It has sat since 1979 and has not been turned over since then. Will I have to rebuild the motor or am I good? Thanks in advance.\n\nJim B :D .