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> When doing a max speed test, holding high horsepower output levels for a long time, an internal combustion engine will overheat quickly. That's true even with massive airflow over large liquid radiators, with coolant flowing through the casting along the cylinder walls - not to mention literally being a pump which moves cold air in and hot exhaust out at a rate of thousands of liters per minute.

No? Many passenger cars do not have sufficient oil cooling capacity to handle continuous high speed high power running, because it's not necessary. That doesn't mean internal combustion engines in general can't.

Airplane engines run at max power most of their life and the piston variant is typically only air and oil cooled.

Plenty of race car engines operate at near their maximum power and RPM limits for long periods of time.

Lots of cars can in fact operate at maximum power for long periods of time (see: Autobahn.)

Train internal combustion engines can operate at maximum power continuously.

Generator engines from home to megawatt size operate at max power continuously.

Stick to what you know, friend.




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