I have used schubeck ceramic flat tappet lifters which are advertised as being less fussy on break in etc.
I emailed Chevron or Caltex NZ, they have supplied me with data that their Delo 400 has 0.15ppm
zinc content still. My engine has has two dyno sessions first at KC on GTX with all the cam lube he built the engine with and second on Delo 400, I will continue to run Delo for the first two
oil changes.
Delo 400 is rated for Diesel and petrol engines Chevron states what they built it for I dont know why people on the web that know little about
oil say its and other makes of diesel oils are only made for diesel, this
oil will be fine by itself with any additional
zinc additives.