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Ted G.
Ted G., ASE Certified Technician
Category: Car
Satisfied Customers: 6159
Experience:  20 years auto repair experience, ASE Master Tech, Mechanical Failure consultant, Expert Witness
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Ethanol effecting gas mileage..engine performance

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is ethanol effecting gas mileage and is the induction service that is recommended going to improve engine performance? thanks patti
Patti, ethanol has less energy in it per gallon than gasoline does. So if some of what burns through your engine is lower in energy you will use more to do the same work (moving the car). Most people have lost some fuel mileage due to ethanol addition. If you have a flex fuel vehicle that will burn E85 it will get much worse mileage on the E85, but E85 is cheaper so it almost evens out. Of course you are contributing to the tortilla shortage by using the ethanol too, so that makes a difference. As for an induction service- There are some benefits to cleaning the throttle body and induction system, but if the car is not experiencing an actual performance issue, you will not see any significant change when the service is done. If it is done as preventive maintenance then no change in performance will be noted. If it is not done and eventually a problem shows up (sticking throttle for instance) then a huge difference would be noticed once it was done. Let me know if you have any further questions, I'm happy to help.
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