Thanks for the info guys. I just didn't know whether there were any adverse effects to using oil that had been stored for a year or two. I'm going to hit a couple AAP stores next weekend and stock up on the AAP Totalgrip filters and the Valvoline dino. It will save me a lot of money in the long run. I drive a lot and change oil between 2800 & 3000 miles, about once every 2 months. This last oc was my first one with the AAP filter, and I sure did like how easy it was to get that filter tightened up on the engine block. Plus with the bogo offer the filters cost me less than $1.50 each, compared to more than twice that for the Purolator Premium Plus. This last oc only cost me about $10.00, so stocking up for the next year or two makes perfect sense to me now.