I am the proud owner of about 10 working lawnboysn(+ several parts mowers) and a few toros, all 2 stroke. It makes me sick thinking this is the end of two strokes. I recently purchased a craftsman for about $350 that was not half as good as any of my old lawnboys or even toros. Really just a bad mower all around from the deck to the drive system to the motor. I can not say anything good about it. I consider myself lucky that I know what a good mower is and was able to return it. If you look at the longevity of the good two strokes if taken care of properly they more then make up for the air pollution. We now have a bunch of overpriced junk mowers that will take more energy and produce more pollution taking them in to be repaired or to the scrap yard. Not to mention the wasting of energy and resources making more junk mowers to replace the junk mowers that died and shipping them from god knows where. This throw away society is the cause of our pollution not the light weight powerful easy to repair two stroke.