Ok Gang, what brand of engine oil do you use? Have a new 2019 GTS 300 and needing to change oil in a while. Do have oil that I purchased for the first change from the dealer. Brand name Motorex made in Switzerland. While this may be a "top of the line" oil, isn't there a oil made in the US that is equal or superior? Thinking like Mobil1, Penzoil, Valvoline or something along those lines. Would like to have a brand I know and have experience with. My Harley runs Mobil1 and with good results. What are you using if any of the above? Thanks All.