"Jay Honeck" wrote in message
news:Hxkwf.474673$084.253721@attbi_s22...

Isn't that a stitch? Your A&P says 1000 RPM is too *slow* for proper
lubrication. Jim Macklin (and many others) says it may be too *fast* to
run your engine before proper lubrication has occurred. Who is right?


Your O-540 is probably better at oil distribution than my O-235. Your
engine is substantially larger and more expensive. They can afford to give
it a better oiling system than exists in a smaller, cheaper engine.

As for trusting Lycoming to tell us: I believe they have a commitment to
safety, but they also make money from parts, like cam shafts. Adding to
that, summer is much different than winter oil at startup, not to mention
cylinder clearances. On startup, do you want the cylinders to wear out
faster, or would you rather protect your cam? You may not be able to have
both in an optimum fashion on some engines. Less RPM may help the
cylinders, but leave the cam with less lubrication. It makes me wish that
all cams had a direct spray oil system, and that there was an electric oil
pump that could be used to lubricate the engine prior to startup.

Paul Missman