My blower was bought in July 2014. It quit running this Sept. I tryied the true fuel from Lowes and it run Ok. It is sad that it uses 6$ quart gas. I am a retired product eng. We had to design the product to use under the present environment or gas in this case. Different fuel lines could be used which would not be effected by the gas. This leaf blower is junk and should be redesigned. See Lowes reviews of product.