"Jay Honeck" wrote in message
ps.com...
Yeah, I hear ya. I just don't think an occasional simulated engine-out
practice is "needlessly".

And I still want to know *how* it harms the engine. Exactly what parts
will
be damaged, and why?

Can we agree that idle power/full power engine management will cause
more wear and tear (AKA: "Damage") to an engine than steady-state
operation?

Considering that the overwhelming majority of W&T occurs during a cold
engine start, that would be an odd conclusion. The worst W&T on an engine is
DISuse.

What's worse for your car; short trips and multiple startups, or stop and go
driving?