Lisa wrote in message ...
Perhaps this doesn't matter much for a non-turbocharged engine,
but an instructor says that it is best to idle the engine at
1,000 RPM for a few moments before Mixtu Idle Cut-Off at that
RPM to shut down.

The POH says throttle full aft, then mixture cut-off to shut
down.

Which is best?

The idle at 1,000 RPM sure helps in my IO-360 engine. My engine hot
starts great, and cold starts great, but is very hard to warm start.
Idling at 1,000 RPM (or 1,200 RPM) for a couple minutes seems to make
a huge difference.

-Robert