Cooling shock is, IMHO, an overblown issue in normally aspirated airplanes.
Coming east over the mountains, I regularly descend from 13,000 to land at
5300 -- and my cylinders are still tight 500 hours over TBO. It's a plain
vanilla O-540, severely understressed, and I baby it by running lower rpm
most of the time.

Seth
Comanche N8100R

"Morgans" wrote in message
...

"Nick" wrote

I would believe most owners (including myself) are more concerning with
proper leaning, cold shock, and sloppy pilot landings & takeoffs. Those
factors will bite into an owners & FBO's pocketbook.

How does cooling shock show up, in a diagnostic/ overhaul/ shortening of
engine life, if you know what I mean? What parts suffer, and how do you
know other than tearing down the engine? (short of having it seize on you)

I have my guesses, but am probably at least partially wrong, and possibly
totally wrong. g
--
Jim in NC