Tom
I got the idea of 85:1 oil mixture directly from DLUSA.NET. It is listed in the FAQ section of the website. His personal breakin procedure is 2 gallons of 32:1 petroleum based oil and then Amsoil Saber Professional 100 mixed at 85:1 afterwards. He states it keeps the engine very well lubricated and keeps the inside of the engine clean and running great. I have used Amsoil in my Brison 52 and find it to work well. At one time I believe I read that Brison would not honor the warranty if a lower ratio of oil was used. I guess that's not the question here but just thought I'd throw in another point of using high oil ratios.
Paul