Base number 6.9mgKOH. It is average. No need to think that this oil will last for long change intervals. This is oil for 200-250 hours in our difficult conditions. If converted to kilometers, it will be somewhere around 5000-7500km.
NOACK mass evaporation at high temperatures = 8.2% - a good result. This oil has a very low waste consumption. If you have an elderly Japanese or Korean who has an expense. Here is a cheap and low-burning oil for you.
According to the viscosity characteristics, everything is mixed correctly. It's really an API standard, ILSAC. Within its class, it is thick and strong. A low viscosity index indicates that there is not a lot of polymer thickener in the oil. That is, Xteer should keep its viscosity well under heavy loads.
Unlike the original oils, there is a big plus. It is rare, not popular and is not faked by anyone. In addition, the price tag is very cheap, you can’t make much on a fake.
Hyundai Xteer Gasoline Ultra Protection 5W-30 API SP - Russia Oil Club Forum