pressure sensor

I wonder where to best measure hydraulic oil pressure and temperature on a 2.5t digger. General wisdom says oil temperature is most accurate at oil return. Where should I measure pressure? I reckon there are different places, but pressure would only show when the particular cylinder is operated...

Hi to start off I have a 2018 LS xg3032 I had the engine light slow flash and regen/exhaust fast flash that indicates dpf 100-140% I removed dpf cleaned it and flushed it reinstalled and now I have regen/engine light fast flash indication 30 second shutdown. Questions 1- is there or where...