Does This Debunk the "Coolant Can Flow Through the Radiator Too Fast" Idea???

jos51700 said

I'm not real smart but I guess I can't figure out why some folks might need the pump to run slower, and why some folks might need it to run faster, all dependant on your parts combo, your application, the maintenance and functional ability of the parts ya got, etc. to the point that you can't make a blanket statement about much at all....

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I can. If your engine speed is below 8k speed the pump up.

The only reason to slow the pump down is if you can’t keep the belt on.

At some point the fan, ANY fan will become less effective and will fail.

That’s why you slow a pump down.

For the drive through idle guys and the rest of us not turning that kind of rpm need to speed the pump up.

The fact that this is still being discussed is proof positive old myths never die.