In article Sl3_c.96690$9d6.67401@attbi_s54, (Ben Jackson)
wrote:

In article ,
Roy Smith wrote:
Other than some quirks in how you start them,

...which don't show up until your renter has flown to a distant airport,
shut down, and now wants to restart the hot engine.

Which is certainly inconvenient, but it's really difficult to do any
serious damage to the airplane if it's on the ground and you can't get
the engine started :-)