ORIGINAL: Silversurfer
Brison engines ARE supposed to be run from day one on a quality synthetic oil. The older Brisons were broken in on a natural oil then switched to synthetic if desired after the first gallon.
So ..... What's the difference between the old, and the new Brison's ? Is the metallurgy any different ? And then, what would be the difference between the metals used in a Brison, and the metals used in a Zenoah ? Or then .... Why shouldn't we break in Zenoah's from the very beginning using synthetic ?
> Jim