Does coolant harm serpentine belts in any way?

[Blaine B.]

Just curious, does coolant harm serpentine belts in any way? I notice that mine is squeaking a little (much less now) after I flushed the coolant. Used some brake cleaner on it to make it go away. Anyone know if coolant permanently deteriates belts in any such way?

Thanks!

[Matthew Currie]

Just curious, does coolant harm serpentine belts in any way? I notice that mine is squeaking a little (much less now) after I flushed the coolant. Used some brake cleaner on it to make it go away. Anyone know if coolant permanently deteriates belts in any such way?

Thanks!

I doubt coolant will harm the belt, but brake cleaner might. Coolant, being somewhat slippery, might cause a belt to squeal until it wears off, but it might also just be telling you that the belt needs tightening.

[Blaine B.]

Belt's tight, just tensioned it after removing it for the water pump. Thanks for letting me know though, that is has no longterm effects!