Juan,

Running lean of peak also
results in reduced performance, rough engine operation in many cases and
shortened TBO due to the above-mentioned oxidative attack of exhaust and
combustion chamber components. Running lean of peak also has another side
effect, increase in oil acidity, which causes oxidation in engine internal
components (same thing happens if you don't operate the engine often enough
to burn off any condensation in the oil).


Care to back these statements up with numbers?

--
Thomas Borchert (EDDH)