Here is a link to a VERY lengthy article that one SAE engineer wrote on his testing of hundreds of oils. If you get to the last portion of the article he ranks all of his tests with results. In his testing he ranked the Valvoline VR1 at #36 and the Joe Gibbs Hot Rod at #97. It's an interesting read. You can make your own opinion about his testing.
https://540ratblog.wordpress.com/201...-test-ranking/
Ted