I honestly don't know, but it is different than any other brand 2-stroke oil I tried.
It only compares to red Dolmar 50:1 oil, which makes sense and which I used excessively prior to switching to Makita oil (I got a very good price on purchasing a whole box of it, 12x 1 Liters).
I tried many oils and most leave a dry carbon residue that would build up over time, or a hard enamel like glazing, neither showed satisfactory "flushing" properties.
I love this stuff, I am glad I got a whole cardboard box full off it!
Both labels, neither reveals much info.
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