That's funny.Here's what AMSOIL says:
Oil Myth: The color of the oil indicates when it’s time for an oil change
It’s common to assume that black motor oil has worn out or become too saturated with contaminants to protect your engine and requires changing. Not necessarily. As we saw, discoloration is a natural byproduct of heat and soot particles, which are too small to wear out your engine.
The only surefire way to determine if the oil has reached the end of its service life is to perform oil analysis. Chemically analyzing an oil sample reveals the condition of the oil, the presence of contaminants, fuel dilution and so on. Several companies offer oil analysis services, including Oil Analyzers INC.
Absent oil analysis, it’s best to follow the oil-change recommendation given in your vehicle owner’s manual or by the motor oil manufacturer. The recommended service intervals for AMSOIL products, for example, are based on thousands of data points spanning years of use.
It’s best to trust the data, not your eye, in this case. Otherwise, changing the oil could amount to throwing away good oil.
I don't trust wive's tales or rules of thumb. I trust science and testing. I do my homework and almost never have a blue face. Manufacturer's are very careful in their maintenance recommendations especially for legal reasons. In point of fact, most manufacturer recommendations have a rather large margin of safety. I worked in large corporations my entire working life. If you want to throw away good oil, then go right ahead. But I'd rather spend that money elsewhere where it can actually do some good and not waste resources or damage the environment. But recognize that your car is not any better off or will last longer with excessive oil changes. I am the same way about putting in premium gas when the car is designed for regular. I've followed manufacturer recommendations on all of the cars I've had for the last 58 years and have never had major problems other than manufacturing defects. Again, the only reason to change the oil on a car like this is that the manufacturer recommends it to maintain your warranty. There are a few exceptions like tracking your car or if you drive heavily in very severe conditions, but the manufacturer has recommendations for that as well.
I may be a bit sensitive to issues like this at this time because of what's happening. I just wish that people were more interested in science and checking the facts about things our leaders say. So yes, this is a bit of a rant. But so be it.....
Amsoil doesn't even make it's oil.
My other Korean 2.4 GDI with only 11,200 on the odometer looked bad at it's 4k OCI.
Looked bad at the prior oil change at 7.2k on the odometer. I did not get to see the oil change at 3k on the odometer. The dealer did the free oil change.
So yes, oil color on our gas-only GDI / TGDIs matters..... a-lot. Most-all of us are using SN Plus / SP GF5/6 oils. Some are including Dexos 1 and Gen 2 on the front labels.
You're darn-right it matters.