These came in for failure analysis:

01. Shows severe calcification and build up due to application of ground water obtained from a pump. (Later revealed to be water sourced from a puddle).


02. No coolant use evident. Metallic particle residue likely from cylinder lining cavitation present. Operator claims that they do not use coolant because they were informed that it corrodes the lining.


Pictures speak a thousand words.

Use clean water and the correct coolant at all times. There is no excuse for being this ill-informed.