Mrs. Mouse decided to build a dandy fine fluffy nest under the cooling shroud and it over heated the cylinder and gauled the piston and cyl wall badly. That explains the metal in the oil just a couple hours after the oil change. The piston may have already started gauling before the oil change. The engine was clean as a pin inside. I always used 30wt non detergent oil in it as stated by the manual. I also used 87 octane gas as it is the 89 octane gas around here that has the alcohol in it. I don't think that oil with zinc would affect this engine as it has a nylon cam in it. The zinc additive is more for high RPM engines with heavy valve springs riding metal to metal at the lifter to cam point. It may be possible that the zinc in the oil would have helped stop the cylinder gauling, but with an aluminum block I somewhat doubt it. This engine was a 2005 so I would think if the older ones would require it, they would have made changes to the design since the EPA is now watching small engines. I know for sure in the future I will check for mouse nests before I start splitting in the future! Thank you all for the comments and suggestions. I started looking for a replacement today, hopefully one with a cast iron sleeve.
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Today's Featured Article - The Day Mom Drove the 8N - by Brian Browning. My Dad was wanting to put in a garden but couldn't operate the 8N and handle the old horse drawn plow he had found and rigged up to use with the tractor. Well, he decided to go get Mom out of the house and have her drive the tractor while he walked behind the plow. You got to understand that while my Mom is a hard worker who will always help whenever she can... she had never operated farm machinery before that day. Dad got her out there, explained how the clutch was the same as in our o
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