As some of you may know, I bought a 2017 Harley Street Rod brand new. So it was sitting on the dealer lot for at least 2 years. And it now has 300 miles on it. The first scheduled check up is at 500 miles. That will include an oil and filter change. I am debating if I should change the oil before zipping it up for winter storage. I have a jug of Amsoil 20W50 ready to be swapped in, but don't know if I should do it. My thoughts are whether the dealer will be upset that I put on non-Harley motor oil, which the owner's manual says to only use Harley oil. Secondly, is it too soon to use a synthetic oil while an engine is breaking in? I have never owned a new vehicle and therefore have no idea what the politics are at a dealership or how to best manage a new engine. I am just thinking putting in the new oil will keep the motorcycle in better shape while it's in storage. Let me know. Thanks.