Most engine manufacturers recommend that a petroleum based oil such as Lawn Boy Ashless 2-stroke oil at a 32:1 ratio be used for the first 2-4 gallons of fuel burned in the engine. Then they recommend switching to an all synthetic oil from there forward.
Last fall, I was able to find Lawn Boy Ashless oil in about every store in our area that carries lawn care products. Since completing the build on the new 3.2m Porter for Alex, we needed to get break-in oil to start his DLE-111 engine. I went to the usual places and Lawn Boy oil was nowhere to be found!
The place that ALWAYS had Lawn Boy oil, Outdoor Equipment Company, was my stop of last resort...again, no Lawn Boy oil on the shelf. When one of the clerks asked if he could help me, I asked they had any Lawn Boy oil in stock...he got a rather pained look and said they had two cases in stock in the back store room and when that was gone there would be no more!
Seems the EPA has deemed petroleum based 2-stroke oil to be an air pollution hazard and it is now banned in the U.S.A.
I got four cans so I can break-in four more engines...then what??