Preheat / Pre-Oiler

So is this the type that is externally mounted, and driven by a belt?
--
Jim in NC

Not sure what you mean by this. Mine is a cylinder shape with a shuttle inside.
It is charged with nitrogen. When the engine is running the oil is forced (3
quarts) into the accumulator until equilibrium is reached. Before shutting down
the engine a manual valve is closed. It could also be done remotely using an
electric normally closed solenoid valve. I typically have a 70+ psi charge of
oil to use when starting my engine. I can also easily remove the accumulator, I
have it mounted on my seat back. When really cold I can remove it, I have used
hydraulic quick disconnects which do not leak. I can take it to my hotel room
and keep it warm by a heater. My mounts are also useful for an Oxygen tank as
well for high altitude flights