I'd use it, some things just get better with time!
Think about it, what could go wrong with it? It's not like mayonnaise. Actually even mayonnaise lasts a long time as long as its refrigerated.
I think the manufacturers partly put a date on there, because some person probably had some for 10 years and left it out once, then used it and was unpleasantly surprised. Also, the "expiration date" is a good reason to buy more!