LAST THING you want to hear on your motorcycle Yamaha Blaster Crankcase
DIY crankshaft installer (Yamaha blaster) Crank seal air leak 10W40 will give you better protection when hot. As was said earlier, your transmission isn't picky about oil, and your clutch will work perfectly with 10W-40 Yamaha Blaster leaking crank seal 1996 blaster 200cc crank shaft seal replacement Changing the Gear Oil on a #Yamaha Blaster and finding Chaos with it ,Who does that #dirtbike ...