I was driving to my parents house today and noticed the check oil light was dimly lit. Its probably about 15% as bright as it is when you just turn on the car, to the notch right before starting the car when all the dash lights, light up and its bright red there, then when you start it, it dims. I checked my oil and it was a bit low, at about the bottom little circle on the dip stick, so I put in about 1/3 of a quart to fill it back up. I drove around for a min after that and it was still dim. Anyone know what this might be, does Subaru dim the light for any particular reason? Thanks for any help.