I would go with 10-W30, and if you want to use conventional oil, I would use valvoline or castrol GTX. a lot of people say castrol is the best, but castrol does not own their own refinery, they just buy their oil from other companies and add their own additives, so its really no better than valvoline or some of the others. dont use quaker state, pennzoil, or anything like that.
If you want to step it up to synthetic, I would go with royal purple. I personally would not use mobil 1 synthetic. I used to use it all the time, but it tends to burn more than royal purple. I had to add a quart every 1500 miles or so, but with royal purple, it would only burn about a half quart every 3k miles, so it was significantly better.