Wow, you guys make me feel like a slacker. I don't change my oil anywhere close to every weekend. But I figure if I'm using good oil and a good filter in an environment that isn't sweltering hot or seriously dusty, it's good for quite a while. So I do a complete oil and filter change maybe twice a season.

In the past, I've used Mobil 1 and RedLine but am currently using Valvoline's race oil - all fully synthetic. (Not during a break in process though.) I also use a remote NAPA Gold oil filter - probably twice the capacity of a Honda filter and more effective. You'll see the same one under the hood of most World Challenge and GAC cars.