the biggest thing with the 2-stoke oil, is that it restores lost lubricity from the removal of sulfur compounds required by the Feds..
7.3's were designed to run on 1500 ppm sulfur, 6.0's on 500 ppm, 6.4 and 6.7's on 50 ppm.. so the current fuel blend has basically no sulfur compared to fuel of...