The only incidences that I'm aware of is when Avtur has been inadvertently mixed with avgas making the Octane rating so low that the engines have destroyed themselves during the take-off. Preignition and detonation can co exist. Either are a rapid heat generating Phenomenon and impose shockloads on the engine. The only way of limiting damage is to reduce the Power dramatically or shut the engine down. IN Normal operations, adhering to the Proper fuel and running stipulated Power(Boost/RPM settings, correct Plugs and Limit head temps you are OK. A motor that is burning a lot of OIL is also suss as the normal Lube oils reduce the Octane rating, considerably if they are in the Combustion process. Nev