Oh, boy. I'm about to have a whole load of Amsoil dealers jumping down my throat! If I had taken the time to research this myself first, I would've found the most current data from Amsoil. 5W-30 VI Flash Pour %ash %zinc AMSOIL XL-7500 196 453 -60 <.05 --- Sorry. Steve Tatro Red/Black '93 with 173k miles Cincinnati, Ohio