I got a bunch of this oil from Amazon. It was heavily discounted, and I was kinda suspicious that it may be counterfeit, so I ran a VOA to make sure it was Legit... it took almost 2 months to receive it, but everything looks good. It all has the same batch # , so this should be representative of all the oil. All additives and vis. are very close to RLI’s advertised specs and the unique mineral antimony is present. I think they were liquidating a bunch of excess inventory which is why it was so cheap.
I plan on mixing this 50/50 with RLI 15w40 to make a 10w40.