I was in a discussion with some local gear heads about oil and all of us concluded none of us knew what we were talking about. And as the oil companies change their blends on a constant schedule to meet emissions and who knows what else...
So I did what any wise man would do and GOOGLED it. Well we all know what happens next... hours of reading to get more confused...
I did come across this websites in which the author actually sounds like he was once in the same situation of confusion and took it into his own hands and developed a test unit and actually tested numerous oils and additives. His reports are relatively current and updated in April of 2017. Long and detailed but you can jump through the long areas. Here you all can review the data.. Let me know what you think of this report.
https://540ratblog.wordpress.com/201...-test-ranking/