g/f 3.6L VVT Pontiac G6 GXP...OLM says 37% left. 6900 on this OC so far using Mobil 5000 dino 5w30. I just cheecked the oil tonight and it was well over a QT low! All I had on hand was Trop-artic 10w30 blend so that is what I topped it off with. But had it not been for me she would have pushed it on to 9k (or whatever the OLM said was okay), and most likely ran it way low on oil. How can they have such an animal for soccer moms who do not check their oil between oil changes??? I was planning to switch it to PP as soon as it got down to less than 10% but Even with full-synthetic, if it is going to use that much oil between changes, then I might as well do dino every time the OLM is 50% and then again aat 0% and so on. This is the exact reason I have always done 3k changes...because I do not think on a car with only 21k on the ticker should need to add over a qt of oil when it is not even close to being time to change the oil according to the stupid OLM. I now officially do not trust them. I do 4-5k on my DD now but that is because it doesn't use oil until then. But I am an oil man and I check the oil. She lives 40 miles away and part of the reson she got this '08 model car last year was because she did not want the hassel & maintenance of her aging Camry that (oddly enough) was using too much oil in between changes and that was on a 4-5k interval tops. I know many will say top-off is natural and the OLM is still good, but it seems due to oil usage, I will be doing it at 50% w/ dino instead of full-syn every 8-9k like the OLM is on track to be recommending based on her HWY easy driving.