Roy Smith wrote in message ...

The oil pressure always indicates at the low end of the green arc
(almost into the yellow) and the oil temperature is always at the high
end, usually just barely below red line. We keep the oil level between
6 and 7 quarts, and use about a quart every 3 or 4 hours of operation.
If it ever gets below 6 quarts, it runs even hotter.

The maintenance guys say there's nothing wrong, insisting that as long
as the gauges are in the green arcs, there's nothing to worry about. In
my mind, being constantly just shy of redline, even if it's still in the
green arc, can't be a good thing. Should I be concerned?



Get the mechanic to bypass the panel oil pressure gauge and use an
external one and do a complete run-up and see what the oil pressure is
doing. If it shows something different, then you might have a
gauge/sender problem. If it indicates the same. then I'd pull an oil
sample and have it run and then pull another sample in 5-10 hours and
make a comparison. Any thing starting to go wrong or on the way out
will show a shift in the sample.

An engine that is always floating around at the junction of the green
and yellow arc would worry me.