A couple of years ago I watched a Discovery Channel program about petroleum products and just happened to see the Gray & Silver/Black bottles of the KMC USA, Kawasaki Semi-Synthetic 10W40 coming thru the dispensery at an unidentified Reading PA oil company plant.
I'm reasonably certain the the motor companies contract oil producers in each country to blend the Genuine Product oils for them, to each of their individual specifications.
You mean, genuine Kawasaki oil is NOT imported? Then, where does the genuine Kawasaki oil sold in Japanese dealerships come from?
I think you're correct, suggesting each marketer contracts with oil refiners to produce lubricants to each brand's specifications. An oil refinery near my home town filled tanker trucks with gasoline, trucks badged with many different brands (e.g., CONOCO, Cities Service, Gulf, Sinclair, etc.). Each vendor likely specified the characteristics for their particular products, all produced from the same refinery.
You posted, "I know nothing about that part of WW2 history (Japanese conquest of the Dutch East Indies)."
"Cliff Notes" summary; how America entered World War II: Prior to December 7, 1941 (date of attack on Pearl Harbor), Japan imported essentially all its oil, largely from the USA. President Roosevelt embargoed oil shipments to Japan, in an effort to hinder Japan's invasion and aggressive war against China and most of southeast Asia. Japan decided to capture the Dutch East Indies for the oil resources there, needed to continue their war effort and expand their empire ("Greater Southeast Asia Co-Prosperity Sphere"). But, Japan considered the American Pacific Fleet an obstacle to this ambition. Thus, Japan attacked the Pacific Fleet in Pearl Harbor, precipitating the United States' declaration of war against Japan, America's full and formal entry into World War II. Within days, Germany, an Axis ally of Japan, declared war on the United States.
Enough about history, what about the future? Within ten years or so, we will use no "fossil fuels," including gasoline and petroleum-based lubricants; no polluting internal-combustion engines (including those powering KLR650s) will exist, and cars, airplanes, and cows (no steaks or cheese) will be gone. At least, that's what the politicians debating tonight say!