Hello Net I am reluctant to get into the middle of a he said, he said discussion, But I see a point that is not being considered. With the exception of drag and track racing cars, I don't know of any car in which the throttle is set to wide open and is allowed to stay there for several minutes. When I am making a long trip in my KR of even in a 172, it's necessary to climb for long periods of time to reach the desired cruising altitude. A lot of times it's not possible to reach that point with out lowering the nose for a while to let the engine cool off for a while. I never run my turbo Mustang for more then a few second with the throttle wide open and even at high speed driving never use more then 2/3 of available throttle. If I were to run that Mustang wide open for the same time, I'd bet it would need an overhaul a lot sooner.
I would have to say that aircraft engines which are designed to deliver peek power for only 2000 hours or less are comparable to auto engines that have factory warranties that last for 50,000 to 100000 miles At the end of the recommended service period. they are both worn out. A lot of that depends on the way a person uses the equipment As Dan would say your results may very.
