Anyone else find that the oil life monitor doesn't work properly? I just had a CEL come on and did an oil change to see if that would fix it. Cause one reason for the code that came up was oil quality. I'd driven 10,000 miles or so and it was still at 13%. I usually wait a little longer, but I'm thinking it doesn't work the way I think it does. Is the monitor like a guide but nothing totally accurate? And I changed the oil yesterday and driven just 90 miles since and it already dropped to 99%. Seems inefficient to me.