Basically what Recon said, moisture in clean oil doesn't hurt a thing, and evaporates as soon as the engine is up to temp. Moisture in dirty oil mixes with combustion byproducts and forms corrosive acids. I change the oil before winter storage, and that oil is just fine to run in the spring. I just bought a big-ass pipe cutter (3"?) from Harbor Freight for much less. http://www.harborfreight.com/no-3-pipe-cutter-5983.html On a side note, I ran the cheap Honda GN4 in my track bike and changed it every two track days. It came out looking as clean as it went in, but it ran out like water. My theory is the transmission actually sheared it under constant high speed high load. Maybe actual viscosity loss, maybe just my imagination. Do the oil tests report viscosity or just contaminants?