Sounds like there is a crankshaft/rod bearing problem. This is usually caused by insufficient lubrication getting to one of the connecting rod bearings - this cause excessive wear of the crankshaft and connecting rod journal. This excessive wear then allows the connecting rod to slap against the crankshaft, causing the noise that you hear.
There is something in you post that puzzles me, please explain this statement: "there was 20 quarts of oil that went nowhere"
Did you put 20 quarts of oil in the engine?
Sunday, August 24th, 2014 AT 11:02 AM