Yuke2K is right on the money. Most people are probably gonna tell you to run synthetic, and someothers will go the other route. I have been running synthetic in my cars for many,many years now, with no problems. But on the other hand, have heard stories from reputable people regarding synthetics being put into vehicles that came with regular oil, and have heard thte synthetics can ruin your gaskets. But, again, probably happened a couple times, and was the only thing to blame it on. So far, I always run suynthetics and work great. Down fall, extremely expensive for what it is. Now, if you really want the best oil, use Royal Purple, have heard that stuff is awesome. I have used it on my motorcycle before, and was very good stuff. But VERY EXPENSIVE!!!. If you got the money to throw around on oil, would diffenently suggest that stuff. But, oil is oil, it all does the same thing, most people are very loyal to there type, so you will probably be getting many opinions regarding that. It is the life blood of the vehicle though. I always do my oil changes earlier then later, but that's just me. Any more, these new oils go for 10k plus before needing to be changed, especailly syns. good luck.
I would change it though, that way you know it's done, and done right with oil you like. Also, I always use Lucas oil additive to my oil at every change. That stuff is the best!!
