My buddy shoved the cheapest oil he could find and just threw it in a bike, many years ago, he was using 10w40. But i think the FZ8 would need some better oil, as im sure its a much thirstier motor than his old bike.
So what oil do you guys use now?
10w40 is one the recommended oils for this bike, according to the owner's manual, we can use 10w30,10w40,10w50,15w40,20w40 or 20w50.
All depending on what your outside temp is and how hard you push your bike (how hot the engine runs) 10w's are much better for cool weather and cold starts, while 20w's are better for hot climates. From what I've read, never use an oil that is marked as "energy conserving", it is not good for wet clutches. Other than that, its up to us to choose between Conventional, Semi or Full senthetic oil. Full senthetic is obviosly the best and most costly oil, but its not rcommended during the break in period, so your piston rings can properly "set" into the cylinder walls.
From my experience, the brand of oil doesn't really matter, its all about choosing the correct weight and type for your style of riding and climate.
BTW, what do you mean by "a much thirstier motor"?
Ride safe & have FUN!!!!