I took my chain saw to a small engine shop back early this summer. The primer bulb had dissolved on it, so had it replaced. The man who waited on me said that the regular grade at some stations had as much as 20-30% alcohol in them, and the government turns a blind eye to that practice. That had caused the plastic to dissolve. He recommended I use the high grade stuff, he said it usually had only about 10% in it.
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I took my chain saw to a small engine shop back early this summer. The primer bulb had dissolved on it, so had it replaced. The man who waited on me said that the regular grade at some stations had as much as 20-30% alcohol in them, and the government turns a blind eye to that practice. That had caused the plastic to dissolve. He recommended I use the high grade stuff, he said it usually had only about 10% in it.