Separate names with a comma.
There was an engine test with Engine Masters that shows a warmer water temp made less power than a colder one. They saw that a hotter oil temp and...
If I remember correctly, it was a fixed metal fan, a clutched fan, and they used the plastic and aluminum flex fans.
If you can, check out the Engine Masters fan test. It was interesting to see how bad the Flex Fan is in terms of performance.