3406e Oil Pressure Dropping

Hello Ya’ll?

Currently have a FLD120 with a 1LW 3406e with 260,012 miles on it and recently been losing oil pressure dropped from 70 in the summer to 40-ish when winter started rollin in idles at 41 and cruises at 43-44. I know the issue I’m having but it may be something else as well. So recently been small oil leaking near air compressor hose and oil purging out of air cartridge none are coming out of my tanks which is good and after it started been noticing oil dropped from 70 to 65 to 55 to now in the 40 psi. It only stays in the 40 psi range now when it idles up and pulling a load

Me and my pop’s are not sure if it can be either that or a bad oil pump/regulator or bearings need changing. We haven’t pulled the bottom off or did an oil sample to find the issue when we did its first oil change. Just want clarification on this.

fyi changing compressor when I rack up a little more money!

 

People I also asked are saying the same thing could be my gauge as-well will have to order an adapter first to hook to my tablet/laptop. It was last serviced at 242,819 and using Baldwin Oil Filters. Is it recommended to use CAT brand filters any difference?

 

Thank the lord cause I’m fixing other things on the ole girl. I do plan on changing things on the bottom side or at least checking things out when the time comes though. Gonna change all my sensors on the motor cause they’re all old and haven’t been changed ever since. (When the original owner through in this 3406e in the truck)

When I do my next oil change, I’ll be sure to install cat filters on my rig Thank u both!!

 

No sir, always check my oil whenever I take off or when at my delivery’s or just in general. No signs of any type of fluid in the oil.