Just a word of warning. Dax, Duane, will not warranty your engine if he knows you run Opti-2 @ 100:1. Him and I have had many discussions about this and he stands by his opinion that 100:1 isn't enough oil. I've countered his contention with no less that five engines I've bought from him, all with several hundred or over a thousand miles on them and still running perfect using only Opti from break in to present.
If in doubt, ask first.
To be totally accurate Duane and I have not talked about this for a while. He might have changed his mind since then.
We used to have a running joke. He would tell me that I was going to blow up my engine and I would say, "That's okay. I'm friends with the guy who sold it to me."