Oil or CHT, which is more important Options

[Tobra]

Oil or CHT, which is more important, or is this sort of an apples and oranges thing? Seems to me if the CHT never goes to high, the valve seats don't make any ill advised trips into the combustion chamber. I know both are important obvously, just something I was pondering. Response won't keep me from installing CHT and oil pressure guages(whose idea was it to put a light instead of a guage, must have been some german accountant)