Oil pressure for 4505
Hello, i have recently purchased a mahindra 4505 di which seems to have high oil pressure. I'm new to the tractor scene so this is just my opinion. The oil pressure gauge goes in clockwise motion starting at 7 then 28, next 42 and finally 57 with 28 being the halfway make and 42 being about 3/4ths. It's riding a hair below the 42. I thought it may be the oil being old so I changed it, (good thing because it needed it.) That didn't make the pressure go down though. I'm using 5w15 diesel oil. So is this normal?