Yeah, but then there would be no oil analysis and we couldn't argue film strength, base oils, etc?!?!?!
Various ceramic components have been tested for many years, such as ceramic pistons.
One of the most positive attributes about ceramic engines is the fact they are thermodynamically very efficient. More heat is used to produce power and less heat is lost to the exhaust. Ceramic components have very high insulating qualites which relates to heat staying in the combustion chamber and producing useful work.
One of the problems has been the right mix of ceramics. The material has to be "self-lubricating," and herein is the rub - trying to find the right ceramic mix (usually sintered powders) that will both insulate against the heat generated and lubricate itself! I.E., finding the right mix such that the coefficient of friction is minimal.
