"Amanda Angelika" <manic_mandy@hotmail.com> wrote:

In news:g8cba29rnhb70gdi4k2e8o1pkrslcgc6er@4ax.com,
Bookman <thebookman@kc.rr.comNULL> typed:

Nope, neither.  When the engine "seizes", overheated metals
have bonded to each other.  If it were simply a matter of
"metal expansion", the engine would free up once it had
cooled down and contracted.  Lack of oil or lack of coolant
can both contribute to said overheating.

You are clearly living in a theoretical fantasy world. An
engine that seizes up due to overheating will normally lose
power and stall a hell of a long time before the metal fuses
together LOL. I've had engines seize on me at over 70mph due
to overheating which caused no noticable permanent damage. 

I don't doubt that you've had engines seize on you.  The 
preventive measures are sooooooooo fucking difficult to 
understand and implement, and the temperature gauge is always a 
mystery, especially that red part.  Anyway, if you understood the 
fundamental principles, you'd know that the car's speed is 
immaterial.  The reason your engine quit at 70 mph was that you 
were coasting down a long hill after much of the coolant boiled 
away through a defective radiator cap or a hole in your hose, and 
when you let it run at idle speed it stopped circulating the bit 
of coolant that was left. One other time, you were going 70 in 
first gear at 8000 RPM because someone told you to always keep 
the engine speed up if you have a leak in the cooling system.  
Maybe you didn't actually do those things, but surely you can 
understand why someone would think you did.

If you have to go somewhere on a hot day, take a bus.