Guys I am not sure what to make of this. Kind of freaking out. Drove this car all during the winter in Pennsylvania so it was relatively cold. I don't really run the car hard at all. Only thing I may have done was Seafoam the car through the brake booster hose, but I am not sure if that was during this oil change. I didn't like the way my car felt with GC. Just changed to PP 10w30 and so far it sounds better. Any advise guys?