Just picked up a 50 pilot house, the engine was stuck, but now spins freely. My question is, I wanted to check if the oil is circulating, Plan was to empty the old and filled it back up with kerosene to clean up any old sludge etc. and spin it over using a 12 volt battery on the starter to get it to spin faster and flush the block etc., then empty and refill with new oil. I took off the top to the oil filter canister to see if it had flushed through there and it was still holding old oil from before. With the top off and the filter removed from the canister, I spun it over some more expecting to see flow of some sort of flow, but saw nothing. Should there be visible flow? Is there other ways to check for circulation prior to start up after 20+ years of sitting? Any other start up tips welcome and appreciated
Thanks
Matt