What is the reason for color of engine oil become black even at 400 km after the change of oil and filter?

Question

There is no decrease in the quantity
No smoke also

Answer 1

either you dont get it changed enough or it is just normal color and you are not sure what it should look like. Engine oil even after changing it and starting it once can look dark. It will almost never look golden like it does in the bottle. Also think of a glass of chocolate milk. Dump it out and pour white milk in and shake it up. It will look brown not white. Same thing with your engine. You put new oil in and it mixes with the car parts and looks brwon or even black. Dont worry about it.

Answer 2

The oil suspends the byproducts of gas interior the oil, in this style they defend the surfaces of the engine (through fact the quantity of the byproducts will develop the oil turns dark). because it deteriorates it additionally darkens. a good rule is to alter it as quickly because it turns from a semi sparkling fluid to a gloomy extremely black shade, generally around 3000-5000 miles. some human beings use a bypass filter out, which filters a small quantity of the great oil potential for an extremely small length particle matter. in this style the greater suitable filter out can nevertheless furnish a severe quantity, with the bypass filter out filtering out the very small sized debris, effectively lengthening the service durations and existence of the engine.

Answer 3

Try changing the air filter too.
Most oil changes do not really completely empty the oil . They simply drain so a good amount of the old stuff is left.

Answer 4

if you went way over on oil change mileage last time what is left in the engine will taint the new oil, consider an engine flush next oil service. If your car is a diesel then this is normal

Answer 5

Black doesn't mean dirty. Part of the combustion material is carbon. You seem to have an excess amout of that, which could be incomplete combustion. However, it won't hurt anything. Oil has been made to accept it and disolve it through the detergent package. Any large pieces of it will be taken out by the filter.

Answer 6

The old stuff does not get drained all the way so it mixes with the new oil. You can have your oil flushed so it looks clean. It won't affect the quality unless you have sludge in your motor caused by cheap oil.

Answer 7

the hydrocarbons in the motor fuel. You do not have too change your oil before the recommended time interval due too color.

Answer 8

when engine oil turns dark. it dont mean its dirty and need changing. also what year make model and engine would help.

Answer 9

combustion has an efect on oil .

Answer 10

It needs a tune-up ?