I checked my oil level the other day to discover that the level on the dipstick was significantly below the hatched area. It was atleast .5" below the hatches. My question is WHEN does the low-oil indicator normally turn on? It's kind of alarming to think that it never said I was low on oil, when I was obviously over 1.5 quarts short! Is that much oil usage in approximately 2,500 miles considered 'normal?' That's how many miles I've put on the car since I bought it, and the oil life indicator is still at 68%.