They offer the warranty extension when you buy their oil also, which is what I do. It's my preferred oil anyway.
I'm with you part of the way Jim. Today's fuel tends to be better, but alcohol makes it a poor candidate for storage in a less than perfectly sealed container. The alcohol attracts water, then separates from the gas. That's how the tester I use works. You fill it part way with water, top it off with gas, shake it, and see where the level is. The water pulls the alcohol out, and you can read the line showing how much was in the fuel. It'll do that sitting in a tractor, or an old leaky gas can too.