I'm an amsoil dealer...I run amsoil in everything but the motor. Shaffers 9000 keeps mine happy no injector issues and no bypass...yet.
What is the attraction with 'boutique' oils? Im not being a smarta$$ either. I just dont see where something is going to trump the Cummins blue or Mobil 1, truck specific diesel oil. Is it a more cost effective means? More convenient? Do these gourmet oil delivery guys pick up the old oil?