Mine too. Black as what was drained immediately after startup. I could run my previous 94 and 01. 5 close to 10,000 when I let them go longer than I wanted a few times and the oil was nowhere close to this. Like someone mentioned earlier, the drained oil from the older trucks looked like oil from an extended drain on a gasser, except it smelled much better than used oil from a gasser.
I bought 3 gallons of Valvoline Premium Blue from Auto Zone. I noticed the label color was different on one gallon. I also noticed the odd one was much darker in color compared to the other two. After filling I looked closer and the darker colored oil was CI-4 plus and the lighter colored oil was CJ-4 plus.
I wonder how many service depts. or quicky lubes have been accused of not changing the oil... ???