engine oil color in diesel vehicles (black)

friends, I researched this topic in our forum, but could not find it. Why is the color of engine oil turning black in diesel vehicles that I want to ask you?
I will change the oil of my bidet vehicle soon 206 1.4 hdi, what are the oil brands you use?
ii forums ..

It is normal for the diesel to darken immediately.

I have been wondering why I am a diesel user for a long time because it turns black immediately. Although it is an old model, its color is steady even after long km.

[QUOTE = bugrature] I have been wondering why I am a diesel user for a long time, why it turns black immediately. Although it is an old model, its color is steady even after long km.
I think castrol has proven itself in this regard.
[/ QUOTE]

black indicates that the engine is working properly. the main problem is that the color remains the same after the oil change

Why does the engine oil appear dirty and darkened? < / font> & nbsp;

One of the duties of engine oil is cleaning. A quality engine oil distributes the soot parts formed in the engine by means of the dispenser and detergent additives it contains, and prevents it from sticking to metal surfaces. It also cleans those that adhere to metal surfaces with detergent. Therefore, engine oil gets dirty. So the engine oil that looks dirty means & nbsp; does its job well. & nbsp;

For more details; & nbsp;
http://www.castrol.com/castrol/faq.do?categoryId=73024007&contentId=6008642¤tPage=1 & nbsp;

make zero changes in diesel, it becomes black again. I even cleaned the remainder with additives. I put zero oil again the same. no problem, master said he said black is normal