RE: Two Cycle Oil for Air Cooled Engines
The cleanest running oil I have seen to dated (inside the engine) has been the Pennzoil air cooled @ 32:1, although I have not tried Belray yet.
Keith (BME) said that the cleanest engines he has seen have been run with Pennzoil air cooled @ 32:1 and now he is recommending that for break in and after wards.