I was driving to work this morning and noticed the oil gauge reading Zero. I just drove 60 miles in 4 wheel drive. Truck has oil. Truck is running great. 232,000 on truck.
Gauge goes to Zero after 1700 RPMs. Occasionally the gauge will jump around. Where is the sending unit located?

 

The sending unit is on the left side of the block below and back from the lift pump. Once you find the wiring, just follow it.

 

Thanks RCW. Hopefully its just the sending unit.

 

Ah, after driving 60 miles at gauge 0, I think you def. still have oil pressure..........

 

Pat I was thinking the same thing. .

 

Make sure to buy a Cummins sender or you'll be buying the second one very soon.
Genetic, made for gasser auto parts store senders don't last.