Color of oil after oil change?

ISX keeps 1 gallon in the bottom of pan. I replaced my gasket not long ago, and it's just over a gallon that doesn't come out.

That being said, you can still tell its fresh clearer looking oil for a good 5000 or more miles. Even with the old gallon in the bottom.

Now I watched the dudes drain my D13 and refill it, and it was black as the ace of spades just checking to see if it needed topped off.

What's this Detroit thing you guys are talking about?

But I can tell oil that looks burnt, that has no viscosity left in it verse good oil. Old oil is very thin, almost water like.

Watch your gauge. Note where it typically stays when your rolling down the road. You'll notice it will drop a few pounds when your pulling a hill, and it really starts cooking. Good or new oil, it will bounce back to where it normally runs within about a minute, two at the most. Old or cooked or unchanged oil, it will drop 2 or 3 pounds, and might take 10 or 15 minutes or more to come back. That oil is shot.

What's this Detroit thing ya'll are talking about?

 

Are you using full synthetic?

 

No.

Truck takes 36qts.

I put 32qts of Rotella 15w40, and 1 gal Lucas.

1998 VED12 volvo motor

 

And some large engine manufacturers recommend 50k miles service intervals.

 

I just got an oil change on my 2023 cascadia and I was wondering the same thing why is the oil black and watery feeling.
I figured I google it first before I run back into the service bay and ask WTF!!?? But yea just change the oil and its completely black.