So, my truck might be making a little oil. I have been monitoring it since the las oil change about 10,000 km ago. During that time the oil level has gone up a little bit. Truck is running fine - no weird noises and I get great fuel mileage. Oil doesn't seem thin or anything bad. Is this normal and I am being a worry wart or do I need to be looking for anything?
BTW - no codes, I just checked.

 

No, its not normal for the oil level to increase. This is usually an indication of raw fuel making its was in the crank case from a leaking injector. Coolant would change the oil color.

 

+1 you should take care of it.

Loose injector hold down clamp?
Failed or damaged injector o-ring?
Leaking injection pump front seal?

 

Thanks folks, like I said at beginning I am not 100% sure I am not imagining this. So, I will change the oil and pay very close attention to the oil level. If it is actually going up, start looking for probs. one prob with reading all these trouble calls on here, is that I start imaging I hear every one of these problems in my truck

 

Sounds like you are getting fuel in the oil.

Anything else, ie antifreeze would be pretty obvious.

I would address it quickly, if its a leaking injector and it gets enough raw fuel in a cylinder you can hydraulic the rod upon starting. Not hard to r/r an injector, but a new rod would be big money.