Every 5k miles, the light will come on. At around 500 miles prior to 5k interval, the light will start to blink a few times on start-up and then goes away. As you get near 5k interval, the light will flash longer and will stay on as you near 5k interval.
PERFECTLY NORMAL. It's a reminder. Once you get your oil changed, the dealer resets it. If you do it yourself (or go to independent shop), then you need to ask your dealer/service person on how to reset it yourself manually. I am sure someone on here knows how to do it...but don't worry, your engine won't blow up anytime soon...it's not a Ford ya know!