Did the change to Amsoil make a difference? I've got a '23 RTL with 20K miles and have been hearing similar noises for a while and considering trying the Amsoil.My dealer swapped out the Chinese battery for a good Yuasa battery earlier this year, so I don't think the battery has anything to do with the noise. Amsoil going in on Wednesday, so we'll see if that makes a difference.
Also, did you use the 5w-40 or 10w-10?
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