What could this do to the internal parts? It didn't make it into my oil but it shot my 02 sensors and cats. It was about 2gallons of coolant burnt before I repaired it. Could it damage the piston rings? Valves? ect. Thanks

 

Bearings If run for too long with a major leak. I would think your ok with the bearings

 

If you didn't have any coolant in the ooil then you're fine.