Finally!
March 23, I removed the parts from their jars.
Total time exposed: 85 days.
#1: glue integrity
I'm happy to report that the glue held. It was rock solid. I tried twisting the pieces apart, with all my strength, and it wouldn't budge.
#2: PVC
The PVC did not show any effect from exposure.
I used a razor blade to score the PVC, first with a dry part, for reference, then with the exposed parts. There was no apparent softening of the PVC.
#3: chemical reaction
The Jet Dry solution was as clear as day one.
The Windshield Wiper fluid solution however, developped a slime (pic below).
I picked some of it out of the water, and it has a texture similar to paper, and that's where I expect it actually came from: the sticky/labels.
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