Originally Posted by Grimmrican
Ok because my friend was telling me he took it off to create less stress in the engine *shrugs* idk I just wanna get to the bottom of this
He meant well.
I usually take my A/C belt off around this time because I'm not going to be using it anytime soon. At the end of the month or so, I put it back on to check if the A/C is still working (you have to do this to check on it periodically).
Leaving the belt on does nothing significant. It's only when you turn the A/C on that your MPGs begin to drop.