We have used other manufacturers mixing oils and mixed exactly according to dosage. Often heavy smoke was the result which, however, then put. In this mixed oil the smoke is low, even with heavy use (hedge trimming with branches up to 28mm). The power loss in stronger branches is hardly noticeable. We are convinced of the product. I must point to the fact that we use despite E10-capable two-stroke engine, premium gasoline. Are we going to buy again if our stock is running low.