Hi Toni , glad you got your starter changed and got it running , on the oil pressure it might not be anything wrong , the line that broke was it the very very small white plastic line , if it is the cold may have something to do with it, one, if it is below freezing the oil may be to thick to sent the gauge the right pressure , and also will make the line very brittle and hard and will break very easy if it had a small kink in it , hope you did not lose much oil when it did , they pump a lot of oil out on the road before you know it, if it is losing the oil pressure it is not much, you may have a sticking oil pressure relief valve, if your going to use a treatment use the oil you have in the engine , after a few days the pressure does come back up the valve was sticking , it happens more often in cold weather because the pump housing is aluminum and the valve is steel,