Southerngent
Member
I just purchased a 2014 Thunderbird Commander and when under power the engine has alot of noise. But when slowing down the noise isn't too bad. Is that normal for these engines to be on the noisy side. The bike has under 13000 miles. The dealership that I purchased the bike from did an oil change to it before purchase. What grade of oil do you normally run on these bikes. Thanks to all that reply