The important thing to realize is that changing the
oil after sitting is a waste of time. If moisture is built up in the crankcase it'll still be there and the sediment will still be on the bottom.
Oil doesn't degrade (remember it was buried for millions of years) it only gets dirty and unless you run it to warm it up you will neither remove the sediment or the moisture. Run it at operating temperature for a bit and then change
oil and filter.