Which oil do you guys recommend in my 1050 hp...540?
Spinning 6200 RPM

Amsoil Dominator 15-50
or
Amsoil Z-Max 20-50

And why?

Chris

My choice would be the Dominator Racing, but here are the links to both data sheets. Both products will work great in your application.

http://www.amsoil.com/lit/databulletins/g2570.pdf
http://www.amsoil.com/lit/databulletins/g2883.pdf

Thank you

Also, the dominator racing actually has more zinc and phosphorus than the Zrod. The zrod, however, does have a bit more of a rust and corrosion inhibitor package built into for engines that tend to sit a while between uses. But you say you're running 6200 R's, I think the Racing Oil would be your number 1 choice.

That is what I was guessing....

I appreciate your suggestion.

Chris

I just asked the same question from Amsoil tech support and they told me Dominator is the way to go for very high performance engines. Z-Rod is designed more for flat tappet engines that are more moderate in power.