Here are the motorcycle oil container labels for the Valvoline 4T Stroke Full Synthetic 10W40 motorcycle oil. I sometimes use this oil in a Kawasaki KLR650, but I haven't used it yet in a Harley Davidson motorcycle. I would have no problem using this oil or the Mobil1 10W40 in a Harley Davidson motorcycle engine for cold weather riding. Valvoline does give an API and JASO rating for this oil, which you can see on the back label.
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