I removed all the mystery oil from the cylinders and cleaned out all the silt and debris that was in there. One cylinder had a few small acorns and they all had a lot of silt and grime in them. To my untrained eye, the rust doesn't look too bad. Also, can someone tell me what the markings on the top of the pistons mean?
Here are some pics of what I found:
Picture 1 Picture 2 Picture 3 Picture 4 Picture 5 Picture 6
