Below, is a video of a field test of our new Woodlink Absolute Squirrel Resistant Bird Feeder (Model 7533). Overall it passed, although the rascal did get a nip of seed when he was hanging upside down. Since I put up this feeder, I've noticed the little buggers stay away from my car. I'd rather have them bottom-feeding bird seeds than chomping on my engine cables like they once did to the tune of a $300+ repair!
Stay with it, since it gets interesting toward the end.