Lately(started last winter) i've noticed intermittenly that a low oil pressure warning message will come on for about a second and then go away when i start the car. It's only happed about 5 times including the most recent one which was about a week or so ago. I thought maybe it was due to running heavier 10-W30 since it doesn't get cold enough in this part of texas to need to switch during the winter but i decided to switch to 5-W30 to see if that was the culprit and i still get the same message. Most of the time i get it when i first start the car after changing the oil but sometimes i'll get it first thing one random morning. Even during the summer when in my garage its still pushing 90* in the morning. Could this be an ailing oil pump? I put 6.1 qts as stated in the manual. Any thoughts?