Just bought a used 05 Quadcab. The dealer says they changed all the fluids. How fast does the oil change color to black? It black now.
Thanks, its my 1st diesel baby!

 

Mine goes black after the first drive after a oil change.

 

as soon as it is poured into the engine. black oil means it is doing its job of cleaning the soot from the engine. no worries man. if it always is honey colored, they put the wrong stuff in. diesel oil is high in detergents and just means that it is keeping the particles suspended in the oil instead of allowing them to stick to everything and turn to sludge.

 

A lot of diesels I've had change to black very quickly, as in a trip down the street and back. My '02 however, stays nice and brown for at least 1000 miles...I don't know what I'm doing but I'm going to keep doing it

 

When i check the oil after an oil/filter change (no driving time on new oil, just idling for a bit to let the pressure come up) it's already black.

 

My 03' was the same way

 

My brothers 03 stays brown for awhile .............06 on the other hand always black..............

 

Mine doesn't go black for about 2000-3000 km's after I change it.

 

Same as the others... it's black as soon as it hits the pan and I check the level.

 

But...I had an 05 auto 2500 cummins and it went black immediately. Weird.

 

Maybe your oil pump isn't working.

 

It's black on the dipstick before even turning the engine on for me.

 

Same here. As soon as I start it up and shut it down to check the level it is already black. Not as dark as when I change it but still black.

 

The last time the dealer changed the oil, it was black within a hundred miles. It is staying honey brown with close to 750 miles with Rotella 5w40 synthetic and Napa 7620. The Rotella synthetic is pricey but I can tell a difference with easier cold starts, slightly lower noise level, and .3-.5 better mpg. I did change the fuel filter (thanks horsehauler) at the same time so the mpg may be from that. I have not decided if I will stick with Rotella synthetic 5w40 fulltime but I will be using it during the winter months for sure.

 

Good to know guys