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Myron Piatek · 08-24-2012, 06:29 PM

I have an IHRA crate motor Stocker, but oil preferences/applications should be the same for SS.

I use Amsoil 5w-20 Dominator all the time with great results. There are thinner oils as well. But you would need to ask engine builders what their preferences are for oil viscosity based on bearing clearances and reliability. Amsoil also has 10w-30 and 15w-15 in their Dominator series as well.

08-24-2012, 06:29 PM	#5
Myron Piatek VIP Member Join Date: Nov 2001 Location: Florida Posts: 1,542 Likes: 34 Liked 138 Times in 51 Posts	Re: Oil for superstock I have an IHRA crate motor Stocker, but oil preferences/applications should be the same for SS. I use Amsoil 5w-20 Dominator all the time with great results. There are thinner oils as well. But you would need to ask engine builders what their preferences are for oil viscosity based on bearing clearances and reliability. Amsoil also has 10w-30 and 15w-15 in their Dominator series as well.