To quote the Spodman once again: May Jesus pee in a bucket. What are these wombats on?
A complete misunderstanding of what causes detonation.
A complete misunderstanding of what caused the cracked spark-plug insulators.
Apparently the spark-plugs on engines fitted to aircraft with POHs that deal with LOP operations ‘know’ they’re fitted to those engines and aircraft, and therefore ‘know’ not to crack. Not so when the spark-plugs are fitted to the same engine fitted to an aircraft without a POH that deals with LOP.
Complete muppets.