Does synthetic oil turn black in a diesel?

   / Does synthetic oil turn black in a diesel? #2  
Yes.
 
   / Does synthetic oil turn black in a diesel? #3  
Very quicky, I might add....
Mark
 
   / Does synthetic oil turn black in a diesel? #4  
it does over time...so do quick and some do slow.
 
   / Does synthetic oil turn black in a diesel? #5  
.....as the ACE of spades. Gerard
 
   / Does synthetic oil turn black in a diesel? #6  
Remember.. it is suspended soot that is most of the 'black' in the oil.. etc.

Soundguy
 
   / Does synthetic oil turn black in a diesel? #7  
Yes, used to be almost instant in the 240D with dino oil. Mobil 1 stays a little more brown looking before going black.

It's not black yet on the JD.

Ralph
 
   / Does synthetic oil turn black in a diesel? #8  
Any kind of engine oil turns black in a diesel.
 
   / Does synthetic oil turn black in a diesel? #10  
this is not to start yet another war, but when I had my JD I had the dealer install Jd oil. When I got home and checked the oil it was black as the used oil.

So I used another oil and it is not as bad. I can go pull my dipstick o my bx right now and the oil is very clearn on the dipstick...

Case in point, if you want to know how dirty the oil is do an oil test. Untill then, you are guessing at every thing.

Same logic goes for gas oils. Some are quick and some are slower.
 

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