I recently bought a honda self propelled mower. In the owners manual, genuine honda small engine 10w-30 is recommended, but other 5 or 10w-30s that meet modern oil specs can be used. Who would pay $7 a quart for the honda oil? For that price Id think mobil 1 would be a better choice, but im not a small engine guy. Is there any benefit to the Honda oil? This was a $400 mower, and Ill be trying to make it last a very long time.