Lycoming's own literature on the IO360 states, the 2000hour TBO is based on 40 hours of usage a month !
and if is not run for about 2 years with out corrosion protection it won't last very long when put back into service,
generally the camshaft lobes go rusty and wear down very quickly. Very poor design with the camshaft in the top of the crankcase,
the oil drains off after a couple of days and it starts to rust very quickly so beware of aircraft with long periods of no activity.
Last edited by horizon flyer; 7th Apr 2019 at 21:43.