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post #1 of 9 (permalink) Old 12-26-2010, 04:22 PM Thread Starter
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Post Gas mileage increase

Hi all, I have a Mazda 3 5 door hatchback that I bought in February of this year. The car now has 17,801 miles. I use to commute 36 miles a day. I was getting a reading of 30.2 mpg on the display from February to June. Since June I am now commuting 15 miles a day. My reading on the display has been gradually decreasing from 30.2, 29.9 to 29.6. My goal is to increase my gas mileage on the car.

Have any of you used this product called Ethos FR? If so, what have been the benefits or cons about this product? I got this information from Welcome to REAL SOLUTIONS to High Gas Prices.

Second, I have been thinking of purchasing set of spark plugs called Pulstar plugs, has anyone here had any experience with them? What are your opinions about them, is it true that thse types of plugs alone can help increase gas mileage w/o having to spend money on performance modifications?
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post #2 of 9 (permalink) Old 12-26-2010, 06:04 PM
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That website was a mess. I didn't bother reading anything on that page. But if I had to guess, I am sure it is a bunch of snake oil.

What I find interesting if that you are over thinking the MPG change of .8. Maybe if your MPG drop from 30 to 20, or even 15, then i would have a serious look at what is going on with the engine. But a .8 difference? Come on, you have to have better things to worry about than a 2% change in your MPG.

Bottom line, the easiest explanation. Your change in MPG is a result of the change in driving habits. You went from driving 36 miles a day to 15. This means that you are probably spending less time on the freeway, where your car gets your best MPG.
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post #3 of 9 (permalink) Old 12-26-2010, 11:16 PM
hwdp pl
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Maybe it got colder, but your lucky I'm averaging 19.8, sometimes it has a lot to do with engine gunk, but I don't think thats a problem, I agree with the previous post about your driving habits.

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post #4 of 9 (permalink) Old 12-26-2010, 11:35 PM Thread Starter
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Thanks guys I'll keep monitoring it and drive conservatively to get as much gas mileage out of my car as possible. Do you have any opinions about fuel induction cleaning service, is a hoax or does it really help in cleaning out the gunk inside the fuel injector/induction system?
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post #5 of 9 (permalink) Old 12-26-2010, 11:47 PM
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Like sea foaming? Nahhh I think it is more aimed towards higher mileage cars, honestly you having nothing to worry about, if you are driving the same, blame your road conditions, or even maybe a bad fill up at a shady gas station.

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post #6 of 9 (permalink) Old 12-27-2010, 01:01 AM
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I used seafoam once on a car with 60k+ miles. I don't know if it actually "cleaned" anything, but it sure produced a lot of white smoke. I did observe faster or say more responsive acceleration, but I don't know if that was all in my head.
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post #7 of 9 (permalink) Old 12-27-2010, 04:26 AM
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Yeah that all sounds sketchy. Performance wise I would say an sri but u said not into that. I would suggest not worrying about it but if u want u could plop in just a new k&n filter. $20 I hear and works well
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post #8 of 9 (permalink) Old 12-27-2010, 04:44 PM
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The trip computer is not 100% accurate. Driving in more stop and go traffic will lower your mpgs on the trip computer. I'd love to get 29 mpg's, but I drive everywhere in stop and go traffic and am happy if I get 19 mpg's driving like grandma.

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post #9 of 9 (permalink) Old 12-27-2010, 09:37 PM
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I get about the same: 19 mpg's. I was hoping the EPA figures were way off but so far the car has been spot on for the gas mileage it stated on the sticker. I do wish it was higher but it is a fair trade-off for the extra perfomance from the bigger engine (2.5).

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Then again, the tires have the death grip of an insurance salesman...
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