WALMART (Sevirville & Knoxville, TN -- maybe not everyplace) has it for $3.89. Been using Valvoline MC Oil for years since I found it at WALMART for that price vs $6 plus for oils at dealers.Since the manual states the type and viscosity to use and temperature ranges, Where I live, I chose Valvoline 10w 40 4 Stroke Motorcycle Oil. Found it at Fleet Farm here in WI $5.45 qt.
They also make it in 20w 50 if you hard harder and hotter.
And its Jaso MA rated (Important).
"Keep the shiny up"