I bought a blue top Optima inJune 2003 and am still running it. In fact, I'm such a tight wad, I've been running it my daily driver (94 pickup) for the past year+. Neighborhood lauhs at me pretty good. The thing's still wonderful, holds a charge big time. I let it run down to zero once (light or bilge or something) and after just a few minutes on one of those nice cart chargers, was able to put it back into action and it's been solid since. Highly satisfied and never a threat of leaky acid. OEM Sequoia battery slowly leaks and I've REALLY wanted to go Optima in there but wife terminated the idea.