What is this ZDDP zinc stuff? I have a roller cam, roller lifters and run full synthetic so I unfamiliar with the reason to be glad over this news (hint hint).
Recently tore up my T&D rocker shafts - after maybe 1500 miles. Full roller set up using their rockers and shafts. T&Ds only comment was - wrong oil!!! They specify high zinc oil for their roller systems... I've been using Mobil1 15W-50 with 1200ppm phosphorus and 1300 ppm zinc (highest of all the Mobil 1 oils)!! Been trying to get their "spec" to compare but unable to so far. Last I knew 1300ppm was in the "high zinc" range.. :(
