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What is the deal with belt dressing on EDPM belts?

Continuing effort to find my squeak....the squeak does go away for a bit if I get belt wet....used stethoscope and found no noise in any pulley area. I do believe it is actually just the belt...is it plausible that the paint that was put on there at GP could be causing a squeak??

Yessir, smooth no lip tensioner, two smooth on top and the grooved compressor delete pulley.

I will give it a shake!

Yep. Brand new. All it had on front of the motor was the grooved idler, smooth idlers, and tensioner. All else up front is new Including water pump.

Yessir! I kinda figured it may lead to that. Got a couple checks to make this evening to hopefully verify it is a pulley and not the belt.

Is there a SOS local? If I remember correctly I looked at replacing it when I had the front end torn apart and I didn't due to it being expensive...

Here is a vid...belt off no squeak of course. Only pulley that does not turn very freely is the passenger side top idler pulley (or whatever those top pulleys are called).... I do think there is a good chance it is coming from the belt tensioner.

6-10 maybe

On my 2001 M1097a2, 6.5....after recovery of it non-running I replaced or put on a new alt, ps pump, both top idler pulleys, water pump, and new belt. Now I have a belt squeak that I can not find. The intermittent squeak does change with RPM. I have the belt off now and there is no squeal with...