The shifter started rattling a little, I thought it might be loose and didn’t look at it for a few days. Then it jumped out of 3rd I believe it was. Not I can’t ride, it won’t stay in gear. Bike has 6,xxx miles on it. I bought it 2 years ago, changed the oil and saw it called for 10w-40 but didn’t know the other qualifying oil it required. I don’t know if one has anything to do with the other or not.