motul 10w40 full synthetic

 

mine took 3 and i use mobil 1 4t full synthetic

 

I used the Honda 10W40 oil...bought 1 gallon and it took it all with a filter/oil change. I also pour a little oil in it with the plug out to rinse a little more dirt out. It puts the .xx gallons you'd have left over after filling up the engine and filter to good use.