It is not a synthetic blend = just mineral oil and that is fine. They all seem to be catalyst compatible now which means they most likely have reduced ZDDP antiwear. If you are looking for a dino oil in that weight it should fit the bill as it has the NMMA logo meaning it has been tested..
The quicksilver 25w40 mineral oil, not the syn blend. I know the bass pro shop says "premium blend", but I know it is not the synthetic blend. Just curious as it is like 12.99 for a gallon compared to twice that for the quicksilver 25w40.