Oil on pistons?

So as you saw on my last thread,I got My duster running with the new to me 360 that I built and after running it about an hour to make sure that my fans and radiator was Enough to make sure it stayed cool and always stayed at 180° no matter what so I decided to check spark plugs this morning and I have An endoscope to go down into the Bores to actually look at the pistons and make sure the bores were good and I have noticed oil on The pistons that's not very much but it's just a slight...

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Author: dustyaman