Just purchased a silver 04 cobra (my third one) it has 36k miles and I was wondering would it be wise to move it to a full synthetic oil? Also I was hearing people talking about it being dangerous going into boost with very cold outdoor temps like 0-20 degree range? Can this be? I have never heard of anything like that until a few days ago. I would think if you give your car a full 30 minutes to warm up you would be fine... no?