[Dad's72]

Well this is what I found online. It is a Q&A from Mobile1. I used Mobile1 full synthetic which was one of the oils they were speaking about. The oil I got says it is good for 15K miles. To y'all using this Mobile1 product or others like it, how often do y'all change your oil? My boss buys this oil for his Challenger and still changes it at 7K miles. What do y'all think?


Q13: If my motor oil turns black, does that mean it's time to change the oil?
Chinn: This is a myth we hear a lot. But the truth is the color of an oil has absolutely no bearing on its lubrication ability. Nor does it automatically signal that you need an immediate oil change.

In fact, many oils will turn black in the first few hours of operation due to contaminants generated by the combustion process and soot particles. The engine combustion process produces soot and other byproducts that then can spread throughout the oil, resulting in the oil having a dark, almost black color.

For cars that are in good condition, the resulting black color typically means that the oil is doing its job, cleaning out soot and other byproducts of engine combustion.

In addition, some additives used in modern oils can produce a dark color over time and this is normal

It is best to change your oil based on time in months or miles. To find the optimum oil drain interval, refer to your owners’ manual to get the vehicle manufacturers’ recommended oil drain interval.

For first time Mobil1 users, it may be possible that the black color of the oil indicates that the strong additive package formulated into Mobil 1 is actively removing deposits from the engine.