I would start it up and run till warm with straight Alky fuel with 20% oil (this flushes out any residual nitro/nitric acid). And then flush heavily with CorrosionX, wrap with a lint free shop rag, and place in a ziploc storage bag, store in a temperature controlled environment. Be sure to flush the head cap with corrosion X as well to get the water out of there, too. Should keep for years.