Blėach

I guess that's what you would call it. Something is making an intermittent noise that sort of sounds like a growl when the wipers are running. It's not the motor because the noise is on the drivers side. I pulled the cowl cover off and spayed some PB Blaster on all the joint and the wiper pivots. The drivers side still makes noise. What the best thing to lube the wiper inner workings?