Pros and Cons to Amsoil in a 6.0

[Bob]

sorry this has taken forever for me to reply I have been working 6 days a week 10+ hours a day so have not had much time for anything. Any way... My calcs come to about 55 mph on average. Previous oil samples have come back good to 15k miles then get some higher levels of some metals, would have to dig up the papers to tell you exactly which ones. Nothing to major though. I have gone to a 10k mile interval and started adding the rev X. I guess we will see how it goes.