So in its history, Yamaha only ever made one liquid-cooled, four-stroke V4 engine, and for some obscure ... You still need to change the gear oil every 6,000 miles or so. So it is important ...

Yamaha r15 v4 engine yamaha r15 v4 is powered by a single ... with me i don’t think it would have survived and yeah the engine oil leaked at a time but i don’t know how but it was fixed ...