Motorcycle Repair: 2006 SPORTY 883, time out, good luck

Question
MIKE, I HAVE A 2006 883 SPORTY WITH 600 MILES I JUST CHANGED OIL TO LUCAS 20/50 SYN. WAS THIS A GOOD CHOICE AND 1 MORE I NOTICED MY LAST TIME OUT I STARTED HEARING WHAT SOUNDED LIKE A KNOCK WHEN STOPPED AT LIGHTS COULD THIS JUST BE BAD GAS FROM NOT RIDING MUCH AND DO YOU RUN 91 OCTANE ONLY THANKS

Answer
Lucas is a good oil, so if you want to run syn. you picked well. Try running the 91 octane and see if the knock goes away. Usually though, you get a gas knock when you are reving the bike. If you still get the knock, let me know
Good luck and happy riding
Mike