The graph for engine
mortaility is a bathtub curve. This would show how a rebuild
can result in decreased engine
When one asks how much life is left in an engine what they really want to know is at what point is the cost of major maintenance
offset by an increase in engine life. Funny
In WJPeterson's 1st post to this thread he speaks of how "many" folks talk of some hour figure as indication of an engine requiring overhaul
(time before overhaul). The thing is, most of those opinions are simply that and should not be the basis for the decision to spend thousands of dollars.
I have found that the best opinion is an oft run engine is the happiest. The best one can do to increase the life of an internal combustion engine is to run it often. Run it to operating temp, then under load. Say, 55-75 rated BSHP. Engine oil
analysis is the best indicator of engine life.
Perhaps as equally indespensible is having intimate knowledge of your engine. Knowing the care and feeding is of value. In this way, just as with regular oil
analysis, you can spot trends in fuel
burn, oil consumption
, or wear indications.