So you're saying to lubricate the pulleys one at a time to see if the noise stops or?what happens if you get the inner firewall assembly area wet? Does the noise go away? I did a similar thing with a noisy AC compressor. Was rather obvious it was that, but just to be sure I wet it down and it would stop making noise.
It'd be a slippery slope (oil joke) to lubricate with WD40 but reducing/deducing suspension/bushing noise I coat one at a time til it stops. Go ahead and put new front springs on your car, see if you don't start getting some groaning.
Seafoam is 1/3 kerosene, 1/3 alcohol, and 1/3 naptha (Coleman fuel). You can confirm that by looking up the EPA MSDS.I just picked up a can of Seafoam and was thinking of adding it to the crankcase, running it for a few hundred miles, and then changing in fresh oil. Thoughts?