The second time I bought a bottle of GB Linspeed, it didn't set up. It was fresh and new, but remained sticky even after a couple weeks on my stock.
I'll agree that bad batches can slip out during production. I always assumed that batch of bad Linspeed simply didn't have the correct amount of dryer. In a way, I'm glad it happened because it prompted me to move on to better stock finishes, and to learn more about them. But I agree with Replacement that the older oil based varnish does not go bad in a sealed can, even after decades of normal storage. I'd be interested to hear what component might even possibly degrade under normal storage in a sealed can. I wouldn't advise anyone to throw out old varnish based upon conjecture.
