I bought a 2007 Yukon Xl Denali with the 6.2l with only 84,000 miles on it a few months ago. I have just completed my second oil change and the level on the dip stick is reading about a quart or so too high. I put 6 quarts as per the owner manual. What am I missing? Should I keep the correct amount in the engine, should I drain some to achieve appropriate level on the dip stick? Is my filter too small? I had to use a mobil 1 filter since that's all the parts store had in stock. The oil pressure gauge on the dash reads about 60 psi on start up and then down to 40psi at idle.