I just got done checking the spark plugs. The gap is ok and there's no oil or any other accumulation on them. I can't remember when I changed them, but it's definitely been less than 30,000 miles ago. Probably closer to 10,000. They were a little grayish white on the electrode, due high heat and high throttle most of the time, but so are all of my plugs when I change them, instead of the "almond color". The car idles fine, and there is no pinging, knocking or hesitation under acceleration, so maybe the plugs/wires are good to go.

When I took the car to the dealership to get the 90k & 105K done, I knew more about cars then the service advisor. Maybe this is because I got my BST in Automotive Technology, I don't know. He was little help when we talked about fuel economy, etc. I've talked it over with a classmate of mine from college and he couldn't think of too many other things that I haven't checked. At this point, I may try to email some of my Auto Tech professors who've been working with mechanics longer than I've been alive. Thanks for the help and any other ideas would be appreciated!

Oh, in regards to the octane rating of the fuel, I was reading an article in Popular Mechanics regarding the octane of unleaded fuel. It was stating that the minimum octane fuel allowed to be sold in the US is "85" and that was only in high elevation areas such as the Rockies, etc. Everwhere else has a minimum of "87". Now, individual proprietors could "water down" their gas as many have been known to do. I would notice a significant loss in power, as well as the mileage, due to the ECU retarding the engine timing due to the sub par fuel octane rating. Who know's.

Mark