Greetings, 2000 Saturn SC2. Never used a drop of oil and at 60,000 I changed to Mobil 1 only for purposes of driving 5000-6000 between changes. It seems that at about 1500 miles into Mobil 1 the oil is slightly lower on the Dipstick. It has been warm lately in the 80's and the air conditioning has been on. I drive the car somewhat hard. 5w30 is the Mobil 1 Grade. Is it normal to burn a little after running Dino for its life. Pherhaps as the engine "cleans" itself a bit or should I step up to 10/30 . Or am I just being Anal here?