Just changed the oil in my Jiffy Pro 4. Noted it recommends "change the engine oil before the start of each season" in the owners manual.
I know I put the full 6 oz. bottle in last year and never topped it up...
As normal, I started it up for a minute or two so the oil would flow out better. When finished draining the crankcase, I had 7 oz of gray oil in my measuring cup. I took a few drops on an old license plate and put a torch under it, as expected all the water quickly boiled off leaving a nice clear oil behind...Have to admit I was surprised at how much condensation could build up over the course of the season but the quick heat and cool down must really be an issue. I will be monitoring the oil much more closely this season and for certain will be changing it prior to summer storage.