My main concern is the zinc and phosphorus numbers. Bikes are still flat tappet for the most part, 1100-1200ppm (or more) is where I would hang my hat for zinc and 100 ppm less for phosphorus. Getting down in the sub-1000 ppm range just isn’t where I want to be.
With that said, can anyone tell me the main job of boron? Does it make up for lower zinc levels as an anti-wear, is it a better cleaning agent than anti-wear, etc. I have read the info on the forum, but am curious if there is one function it does more/better than other functions?
Last edited by Bonz; 03/07/19 11:15 AM.