No matter what, before storing the vessel, I change the oil and filter. I don't want to let it sleep in non-super-duper-fresh oil.
Been my way for years. Saying that, I didn't change the oil once because of some factors and had such little hours. Guess what happened, nothing. Again, this is what I do and no one change change this old dog. You will do what feels right for you using all the conclusions you have. Oils today are FAR superior than before.
