I find it remarkable that 15w30 is talked about so much.
Especially for grade that some here predicted would fall on it's face and go the way of the Dodo bird.
Call it an in between niche market grade, but that is the way of the future.
It's marketing and sales driven technology.
Does anyone have a prediction what will come next, in that market segment?
How about a highly friction modified fuel economy HDEO 20W35?
It wouldn't be an SAE grade, but the target KV100 could sit between 12.5 and 13.5
I think SAE should re-think their J300, before the major oil companies do it for them, by thinking outside of the box again.