My bike has very few miles on it, however, I wouldn't mind getting opinions on what type of lubricant I should use on the chain. Mine was all serviced from a dealer before purchase. That said, I wanna keep this machine at 100%. I was told by a seasoned rider to never use WD40 on a chain, which, I have done before on my children's bicycles. I have lots to learn but look forward to the journey.