MY02 Impreza (WRX) Driver's Window Adjustment for Squeak?

Naw, Armour All will leach the soft plasticizes in rubber and vinyl to the surface over time. Not recommended because it contains SILICON. Better off using something like Klasse instead.

Still, while I appreciate your contribution, I remember reading about a procedure to adjust the window.

TBerk

You'd have to adjust the door or the window glass to interface differently with the rubber weatherstripping seals. I'll wager that increasing the interference between them makes it squeak more, and that reducing it leads to wind noise at speed, but I could be wrong.

Given that it didn't squeak when the car was new, and it does now, obviously something has changed. If the change has to do with the physical alignment of the window, then you're on the right track.