Re: Really bad milage
Check the oil level in the engine. If it magically made the oil level rise all by itself, there is probably fuel in the oil from a leak in the fuel pump diaphragm.
Also, the fuels are now more oxygenated than before, with the percentage of ethanol up from 10 to 15 percent. We have seen an overall mileage loss of between 1 to 3 mpg with the new formulation.
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