Funny.. here’s a link to a thread I posted on the subject back in 09’. It contains Hibs excellent article on the subject. It concludes that 800 ppm zddp is the minimum requirement for our engine. It also appears I was advocating Amsoil at the time...lol. (or any oil with 800ppm or more).
http://www.zr1.net/forum/showthread....mshaft+failure
To me, at least, the bottom line is we should all use what we are comfortable with. To some that’s the extra protection of Amsoil, others Mobile 1 with or without an addative, I’m sure there are many other options. Ultimately there is no one answer.
Good discussion though...
H
