folks, my local mechanic (without checking with me) did this.

he used a screwdriver to bend the bimetallic strip on the fan clutch outward (towards the radiator) - i think this makes the clutch engage earlier?

the temp gauge is now about two notches below mid-point. however the engine roar is louder - due to tighter fan engagement?

my questions:
1. how do i know if the clutch still behaves normally during cold - is it supposed to free wheeling only when the engine is cold from overnight stop?

2. any reliability issue?

3. anyone thought of this before?