So I apologize in advance if this seems like a rookie question. I consider myself a rookie as I am always learning something new.
I am currently driving a 2013 cascadia glider kit truck with a pre 2000 engine on paper logs. I apologize I don't know the year of the motor but I do know it's a Detroit.
One of the first warnings I was given was to never overfill oil as it can lead to bad things. However up until now I have never really had a reason to worry about high oil pressure. I'm used to seeing 20 ish psi for oil pressure
We are having issues with the truck Involving the coolant system sensors. In the process of checking things over today I noticed it was on the low end of the dip stick so I added oil. Slowly. In between each smaller pour I waited roughly 5-10 minutes to let the oil get to the pan and checked it. It didn't seem to move. So I added some a third time and it moved a little on the dip stick roughly 1/32 of an inch.
I then started the truck and the check engine light popped on then off then on then off and stayed off but if revved it pops on then goes away again
To be more specific temp is halfway between 150 and 175, oil pressure shows halfway between 25 and 50 what I would assume to be 37ish psi. Idling between 600-700 rpm. pedal to the floor is 50-55 psi. The truck is idled overnight due to not having an apu,
So here are my two questions:
1) is 37 psi (halfway between 25 and 50 on the gauge) too high while considered cold? What is considered too high?
2) is there a better way to gauge adding oil to prevent the concern at all? My boss refuses to buy smaller jugs of oil. I know that may seem dumb and I apologize but it is a legitimate question.
I apologize for the long post but I have been looking this up for almost two hours and nobody really says anything about high pressures or anything.