Cat 303 CR Oil issue

Hi everyone it has been a little while since on site last. I own a 2004 Cat 303 cr excavator I use for personal use only. I do all of my own upkeep (oil changes. filter replacement etc...) Last year I notice that the oil was very black while check level and then did oil and filter change. I checked level after change and seen that the fresh oil I put in turn black also. This year changing my oil same thing, turned black with no run time on the machine. As stated I use this for my own...

Cat 303 CR Oil issue

Cat 303 CR Oil issue