01-27-2020, 03:48 AM
Rather than depend on marketing hype or opinions on Internet forums, I recommend just doing oil analysis to find out what's going on inside of your engine.
I was concerned about running my bikes in the extreme summer heat here in the desert (100F-115F), so I started doing analysis. I was running a high quality 10W-40 dino oil. Between the heat and the shear effect in the transmission, my oil was breaking down to a nearly straight 20 weight in 3K miles of summer riding. That prompted a switch a synthetic based oil the next summer (same brand). Oil analysis showed that the viscosity was holding up quite well after 3K. For me, the decision was a no brainer.
Given that, I suspect if I rode in less severe temperature extremes, I'd likely be quite happy with the original dyno oil.
I was concerned about running my bikes in the extreme summer heat here in the desert (100F-115F), so I started doing analysis. I was running a high quality 10W-40 dino oil. Between the heat and the shear effect in the transmission, my oil was breaking down to a nearly straight 20 weight in 3K miles of summer riding. That prompted a switch a synthetic based oil the next summer (same brand). Oil analysis showed that the viscosity was holding up quite well after 3K. For me, the decision was a no brainer.
Given that, I suspect if I rode in less severe temperature extremes, I'd likely be quite happy with the original dyno oil.