so a month or so back i had a bad oil leak (more like a roaring river than a leak) that originated from the oil sending unit housing) [that what my mechanic told me]. it was solved with a new sending unit (a non Chryster one). after it was replaced I thought all was good, said and done. I also had them do an oil change cause i had lost so much oil, and they put in 5W-30.
any who, a week or so ago, it was a nice warm day and i went out for a drive, after 30 minutes to an hour of driving, enjoying the weather, i noticed when i stopped the car at the light, the oil gauge would drop to 0, then bounce back up to its normal idle area.
So I called my mechanic, and explained the situation, and brought it back to them, and they tested, but could not replicate the issue, they replaced the sending unit again, just to be safe (a non Chrysler one), and ordered a Chryster one if the Non one didnt fix the issue.
Any way, it seemed that all was good for the last week, having no issue, until today, again, it was nice and warmer, so i was out running an errands, and after a while of driving, i pulled into costco to get gas and while sitting, waiting to get gas the oil pressure dropped to zero from its normal spot at idle, then back up. it only did it the one time, then was normal the rest of the trip.
My question, is this a oil sending unit problem? do i really need a Chystler part? or is this an oil issue, should i have them change the oil to 10W-30 instead of the 5w thats currently in it? (the 5w was put it when it was low to mid 40s outside air temp) its now warming and in the low 60s here.
sorry for the long post, and thanks for the help