Hey everyone. I found this forum by complete accident while browsing the forums over at clubgp.com. Since then, I have spent the last week or so going through alot of the forum posts. It is crazy the amount of information that is in here. It is going to take a lot of time at work to read everything Anyways, the question I have is about my 2000 Grand Prix GT. I have been running M1 in it since I bought it with about 48K miles on it. It currently has around 63k miles on it. I am running M1 5w30 in it (I live in Wisconsin), changing the oil filter at 5k miles, and doing a full oil change every 10k miles. I have been using Fram Tough Gard filters, but it looks like I will have to stop doing that now wont I ) My question is this, should I be running 10w30 like GM says? Also, what brand filter would you guys recommend? Thanks!