My mileage story
IIRC the tank holds 10.3 gallons of fuel and yeah, the brand name stuff is better than no-name for sure. It will take a couple tanks for the ecu to get used to the good stuff, so give it some time.
Hey SB, try some Water Wetter in the coolant system, the stuff works
The blast furnace is about to come back on this weekend but it looks like the Fit will be getting a break as we'll be driving my g/f's Mazda 6, God I love that car, especially now with the new tire/wheel package and the recent 2nd full exterior detail
Hey SB, try some Water Wetter in the coolant system, the stuff works

The blast furnace is about to come back on this weekend but it looks like the Fit will be getting a break as we'll be driving my g/f's Mazda 6, God I love that car, especially now with the new tire/wheel package and the recent 2nd full exterior detail

I poured the entire bottle in my overflow last year w/o any problems?
I had gotten a bottle of the Redline water wetter a long time ago and was going to use it with distilled water in my cooling system since it is supposed to work better that way... I finally said screw it because I didn't want to have to store the coolant I removed or by new coolant for winter and put the stuff in.... The coolant temperature is about the same as it was when it was 15 degrees cooler outside and has only gotten as high as 202 degrees idling with the A/C on.. Driving down the road at 181 degrees is pretty good.
I put some in the van and the water pump went out, granted it probably was already bad but still caused it to leak with in a week. I also read some where that its better to use less than recommended. I will look for it. It does make a difference and it does work though.
What is weird is that adding dish washing liquid is said to work as well as the water wetter products when used without antifreeze... The neat thing about antifreeze is that it raises the boiling point much higher than that of water alone and that prevents pressure build up that blows out seals,ruptures hoses and causes radiators to leak.. I believe the water wetter drops water temperature about 12 degrees and when used with antifreeze about half that much....
What is weird is that adding dish washing liquid is said to work as well as the water wetter products when used without antifreeze... The neat thing about antifreeze is that it raises the boiling point much higher than that of water alone and that prevents pressure build up that blows out seals,ruptures hoses and causes radiators to leak.. I believe the water wetter drops water temperature about 12 degrees and when used with antifreeze about half that much....
Last edited by SilverBullet; Jul 17, 2011 at 07:05 PM. Reason: add another paper
I've used WW since 2000 and am on my 4th car w/o a problem. My Contour SVT, the first car I used with WW had my temp gauge lower than anyone in our club. Their needles would show right in the middle and mine was way to the left, very noticable for sure. I have an entire bottle in the Fit right now but w/o an actual temp gauge its hard to see what its really running but since I've had such good luck with it, who am I to question its quality
SB, yeah that wp was on its way out for sure, bad timing IMO.
I know Royal Purple makes a coolant additive as well and its a little more expensive but because they make such a good product I'd say that's another route to go too. I know this, the coolant additive and Mobil 1 will be getting a workout this week, the low this week is 92 and that's for an entire week, WOW! This and the super cold winters is why I tell everyone that will listen (and even those who don't
) that synthetic is the only way to go if you care about your engine. You know the good stuff is in there doing its thing and even if you don't have a hi-po car, well I say this, if its good enough in one those cars, its moooore than good enough in my Fit.
Oh yeah, got gas today and netted 36.2 mpg and have noticed that when I get gas when its half full compared to down around a quarter tank it gets better mileage, why is that

SB, yeah that wp was on its way out for sure, bad timing IMO.
I know Royal Purple makes a coolant additive as well and its a little more expensive but because they make such a good product I'd say that's another route to go too. I know this, the coolant additive and Mobil 1 will be getting a workout this week, the low this week is 92 and that's for an entire week, WOW! This and the super cold winters is why I tell everyone that will listen (and even those who don't
) that synthetic is the only way to go if you care about your engine. You know the good stuff is in there doing its thing and even if you don't have a hi-po car, well I say this, if its good enough in one those cars, its moooore than good enough in my Fit.Oh yeah, got gas today and netted 36.2 mpg and have noticed that when I get gas when its half full compared to down around a quarter tank it gets better mileage, why is that
I've used WW since 2000 and am on my 4th car w/o a problem. My Contour SVT, the first car I used with WW had my temp gauge lower than anyone in our club. Their needles would show right in the middle and mine was way to the left, very noticable for sure. I have an entire bottle in the Fit right now but w/o an actual temp gauge its hard to see what its really running but since I've had such good luck with it, who am I to question its quality
SB, yeah that wp was on its way out for sure, bad timing IMO.
I know Royal Purple makes a coolant additive as well and its a little more expensive but because they make such a good product I'd say that's another route to go too. I know this, the coolant additive and Mobil 1 will be getting a workout this week, the low this week is 92 and that's for an entire week, WOW! This and the super cold winters is why I tell everyone that will listen (and even those who don't
) that synthetic is the only way to go if you care about your engine. You know the good stuff is in there doing its thing and even if you don't have a hi-po car, well I say this, if its good enough in one those cars, its moooore than good enough in my Fit.
Oh yeah, got gas today and netted 36.2 mpg and have noticed that when I get gas when its half full compared to down around a quarter tank it gets better mileage, why is that

SB, yeah that wp was on its way out for sure, bad timing IMO.
I know Royal Purple makes a coolant additive as well and its a little more expensive but because they make such a good product I'd say that's another route to go too. I know this, the coolant additive and Mobil 1 will be getting a workout this week, the low this week is 92 and that's for an entire week, WOW! This and the super cold winters is why I tell everyone that will listen (and even those who don't
) that synthetic is the only way to go if you care about your engine. You know the good stuff is in there doing its thing and even if you don't have a hi-po car, well I say this, if its good enough in one those cars, its moooore than good enough in my Fit.Oh yeah, got gas today and netted 36.2 mpg and have noticed that when I get gas when its half full compared to down around a quarter tank it gets better mileage, why is that

There is more light ends in premium. Ive noticed that too. I can get 42 on the first half and the back half goes quicker it seems, but still get 40 or more in the summer.
I went racing yesterday, and it was HOT. Over 150 degrees tarmac and air temps 119 degrees. It was fun though seeing a stock B20 with a supercharger car run 12.8. I seen and understand the high octane benefits. Ran 100 octane racing fuel with the meth kit. Cars that were running pump 93 smoked a lot at take off and gear changes and there runs where not consistent.
I wonder now what a meth kit would do in a stock fit on regular or premium now. When tuning the b20 the HP would drop so the tuner added a water/meth kit and it was more reliable.
I just got gas in the Civic, its down to 35mpg but I am happy with that. I've idled over an hour and my average speed is way down 36 compared to 44 mph because of more city driving with more AC usage. My wife's is only getting 25mpg in her Civic with regular. I have found more reading. http://www.obitet.gazi.edu.tr/makale...ngines/017.pdf
http://aerade.cranfield.ac.uk/ara/19...report-622.pdf
http://aerade.cranfield.ac.uk/ara/19...report-622.pdf
I own a fit 07 and I changed my spark plugs to e3 plugs and installed a moroso 2 1/2 inch spiroflow muffler. I found it to be a bit too loud and felt a bit low in torque so I installed a 2 1/2 to 2 reducer at the rear. my pipes are stock to the spiral flow. Gained 35 miles to a tank. pretty pleased with this. sound level is a bit more than i'd like but the trade was worth the exchange.
The OBC dropped to 30.1 mpg after the last fill-up but is slowly going back up now, its 33.1 right now, the heat and heavy a/c useage is greatly affecting the mileage for sure, it would really be nice if the car had a bit more power, like a 15 hp/15 ft/lbs of torque for starters
I should be taking a trip back home sometime towards the end of summer, will be interesting to see the new mileage numbers with the complete switch to premium for the past 9 monthes or so. We might take my Fit to the National Corvette museum over the Labor Day weekend, so that could be another test but not as "official" as all the info I have when going back to Detroit 6x's last year with the Fit for sure
Then there's the Dragon trip but when using premium from the start there it didn't go up as much as I thought it would, netting about 37 mpg going from Chicagoland to somewhere in Kentucky, hmmm, not alot of hills but I remember not using the cruize as much though.

I should be taking a trip back home sometime towards the end of summer, will be interesting to see the new mileage numbers with the complete switch to premium for the past 9 monthes or so. We might take my Fit to the National Corvette museum over the Labor Day weekend, so that could be another test but not as "official" as all the info I have when going back to Detroit 6x's last year with the Fit for sure

Then there's the Dragon trip but when using premium from the start there it didn't go up as much as I thought it would, netting about 37 mpg going from Chicagoland to somewhere in Kentucky, hmmm, not alot of hills but I remember not using the cruize as much though.
It's a hot dry bitch outside today.. I got 27.8 MPG on my last tank that was used driving very sanely and over half on the highway... You won't last long at my age if you aren't using A/C this summer... It has dropped to 107.1 degrees for now.
That's Hot, need higher octane. At least you know more fuel is added as to not detonate, that is why mpg is down. Right know I am getting 49 mpg but it will drop to 45. I overfilled it but that is what happens when it too hot out.
It's the ECU pulling the timing back much further than it would if I had added octane booster... Once it is cool enough that I can stand to get serious with the tools I'll get the water/ methanol kit in and programmed to cool the intake and combustion chamber and then the fuel mileage will come back up.
Last edited by Texas Coyote; Jul 29, 2011 at 07:27 PM.
It's the ECU pulling the timing back much further than it would if I had added octane booster... Once it is cool enough that I can stand to get serious with the tools I'll get the water/ methanol kit in and programmed to cool the intake and combustion chamber and them the fuel mileage will come back up.
I am learning more about octane and its not as easy as the media makes it out to be.
32.5 mpg and I guess that's not too bad, I did run a tank of mid-grade for the hell of it and the drop isn't too bad considering the heat and a/c use. FWIW it was still BP 89 octane too, I must say the response of the engine is pretty good even with the heat and a/c on, although I know the a/c compressor kicks off when under WOT but its noticeable for sure with the better/higher octance, no doubt about it. 10:4:1 compression is pretty high, so the use of premium is going to be the norm for now on, well, IIRC SB said using the mid-grade in the winter was ok, right SB?
You must do a lot of stop and go. I am in the middle 40s this tank, same drive as I always do. You can use mid-grade in the winter but I do use a few tanks of premium too. I usually keep using premium until the mpgs really drop and use mid grade to see if they come back but they usually fall more. I drive the tollway and try to use premium all year. I would like to compare synthetic oil to regular oil mpg under the same conditions but that is harder than dynoing a car to see the added power. I use dealer oil and have not made the switch yet.
What Ive noticed this tank and I used a half a bottle of Iso-heet the tank before is power is right there and I barely touch the pedal. I am seeing instant mpg reading in the 80s at cruise at 64 mph. I notice I can lift of the pedal and still maintain speed and get a higher mpg reading.
What Ive noticed this tank and I used a half a bottle of Iso-heet the tank before is power is right there and I barely touch the pedal. I am seeing instant mpg reading in the 80s at cruise at 64 mph. I notice I can lift of the pedal and still maintain speed and get a higher mpg reading.
Yeah, I do more stop and go for sure compared to you SB and my last tank of gas netted 32.6 mpg using mid-grade, premium is back in there so we'll see how it goes. The heat is coming down but only by a little bit, so I don't see the mileage going up anytime soon, Tuesday is supposed to be 95 and then it "cools down" a bit, upper 80's, what a summer we're having. Even since I've been here (mid Dec of 2009) the seasons have been to the extreme


