Bob,

Your choice of oil for your break-in is a personal matter. If you are going to use Lawn Boy at 32:1 anyway for your break-in . . . . Well, go for it.

Run a batch or two of Lawn Boy and then go to your Royal Purple.

The police are not going to bust down your door and take your engine away from you.

Who knows what the guy used in the other engine before you bought it? It is a good engine isn't it?