Originally Posted by
Jonathan Hanson
Well, that's a novel approach! At this stage it's tempting. I'll report back when I've tried a few of these suggestions (short of 10W40 . . .).
It's quite conceivable that it changes the composition of the brake pad which is why it eliminates the squealing. You could try oiling the rims, riding the bike a bit (with the precaution of assuming your brakes won't work on the first few applications), and then cleaning the rims with acetone. The oil remaining in the brake pads is all you need.