Stain Removal with WD40

Have you ever got an oil-based stain that just won't shift with any amount of scrubbing or any number of stain-removing potions that you care to toss at it? 

That's where I was with a couple of pairs of jeans and a sweater that had all been stained with pine resin, but using a combination of WD40 (hereafter referred to as miracle juice) and surgical spirit I managed to shift the lot of it.