Good morning,
I have a new to me 135 diesel, which I am generally pleased with. When started from cold, the tractor shows 60 psi oil pressure, but as I use it (running a mower) the oil pressure gradually drops to around 25 at speed. I have changed the oil (Rotella 15w40) and filter, but have not seen any change in this behavior. The filter is the element type, and has not been converted to spin-on, which I plan on doing. The tractor does not knock or have engine noise that I can hear, and does not smoke or use oil. It has good power and does not overheat or show any other problems. Is this normal, should I be concerned about it, and what can I do to remedy it if it's abnormal?
Thanks for reading-
I have a new to me 135 diesel, which I am generally pleased with. When started from cold, the tractor shows 60 psi oil pressure, but as I use it (running a mower) the oil pressure gradually drops to around 25 at speed. I have changed the oil (Rotella 15w40) and filter, but have not seen any change in this behavior. The filter is the element type, and has not been converted to spin-on, which I plan on doing. The tractor does not knock or have engine noise that I can hear, and does not smoke or use oil. It has good power and does not overheat or show any other problems. Is this normal, should I be concerned about it, and what can I do to remedy it if it's abnormal?
Thanks for reading-