After I added Underdrive pulley, CAI, stillen y-pipe, straight racing pipe, and greddy SP cat-back, that's when I noticed the change in gas mileage. Plus it all sounds good and adds a considerable amount of horsepower. Let me know if you need help finding any of these things...laterz

 

np minimal, let us know how it goes

Phatmax, i'd LOVE to hook up my car...but unfortunately short on cash, the next purchases i'm making are gonna be new all-seasons before it starts snowing and then Illuminas in the Spring, ride to me is most important first, cos my car rides like a damn boat

 

i get about 370 per 16 galons (thats when my light comes on), i also never cleaned the throtle body. I know I should

Does anybody know what the deal with that ne Shell gasoline? My car definately gets better milage with it, but feels slower

 

I get from 360 - 410 per tank depending on highway usage.

 

You guys should definetly use Shell!!! I got 345 Miles from only 13.5 Gallons

 

thats good economy. Man.. mine sucks lately. I get 180 or 160 to a half , and then maybe like 250 on a tank. My economy sucks. New fuel filter, pcv, and my tb is clean. What else?

 

I checked mine the other day and I got about 400 miles on one tank of gas.

 

all city driving so it blows hardcore. about 250-300ish. i dont drive conservatively either...

 

i just got 372 miles on a fresh tank, went up to monteray all on freeway, and same with down, then commuting back and forth until i needed refill...it was amazing with all that city driving at the end

 

I normally get about 17ish miles per gallon. Half freeway and half city, kinda sucks, but then again, looking for spaces on our SF hills really takes its toll too. approx 250 or so by 1/4 tank.

 

Im in south san francisco...and i know those hills... dolores is horrible!

 

I highly suggest replacing the stock muffler. I have a '92 pathfinder with 94K miles (154 hp v6). I recently put a flowmaster 40 on it with the pipe increased to 2-1/4" from 2" from the muffler back. and am averaging 20.5 mpg on the last three fill-ups. It accounted for a 2 mpg increase and noise increase was insignificant. I got 390 miles out of the last tank. I also own a '95 t/c and I get 27 mpg on the freeway. Lifetime average on the t/c is 22mpg with 40/60 driving mix. Therefore, I would expect nothing less than 450 easy if I owned a max. I'm thinking of getting an '03 max SE but I don't like what I'm reading.....

 

380 miles per tank here. I do mostly city driving, not much hwy.

 

1996 GLE 116,000
CEL ON

$20 on each fill up, Hess $1.95 per gallon premium.
Around 10 gallon per fill up.

I get around 190 for 10 gallon.
Average 19 MPG.

For a full tank, I might get close to 350. I drive mostly in the city.

 

The Exact same thing happens to me. Glad someone else noticed

 

I typically get around 20mpg. Most I've ever seen is about 25mpg. That was all highway miles though. right now I'm getting around 20mpg. 150k on the engine.

 

i avg 325-350 per tank with mostly city driving and a heavy a$$ foot

 

take a look at your fuel gauge...

the space between 3/4 and 1/4th is larger, but still represents the same amount of fuel as the smaller space between 3/4 and full, or 1/4th and empty.

that's why it appears to drop faster between 3/4 and 1/4... get it?

 

Wrong..

It goes way faster in the middle two than is proportionate.. Get it?

 

HUH? Isn't that the same thing?
FLO_BOY

 

every1 here have a 19 gallon tank like me?

 

No, I don't actually think it holds full 18 G. Last week I ran out on an interstate. F**ker only got 370 miles (all interstate) and was bone dry. That is terrible. I used to get high 400s almost 500 per tank.
I got some highway workers give me some from their spare tank, to make it to a gas station and put in 16galons there. I know that the dude did not give me more than 2 galons. It was one of those small, red, plastic emergency tanks.

 

This is the longest post ever, but my tank holds 18.5 gallons. Usually i'll get the gas light at around 16.5 gallons spent, and if i keep pushing it the car will start stuttering at wot with around 17.5 gallons spent, the most i've ever been able to get in the tank at a station is 18.1 gallons and i wasn't quite out yet but damn close, basically running on fumes at that point.

 

i dont drive hwy much but i can get 260-270 driving to school, work, and back to home--there is a big difference when you loose weight in your foot!

 

oh and one time somehow i got around 31mpg on a long trip

 

I get around 410-430 40%city 60%highway.

 

387 miles to a full tank....Very proud of the max.

 

looks like 20.86% of you need to change your knock sensors.

 

I used to use Cheveron's 87 octane and I consistently got about 450 miles per tank (28-29 miles/gallon) ...But then i switched to Shell's 87 and only got around 420....

then I just recently switched to Shell's 89 Octane and lost more mileage.... I get around a little less than 400.... I filled up with about four tanks of 89 to give the car time to make its adjustments. I read in previous posts that people are using 93-94 octane but i seem to be getting around the same mileage or better with my 87... CA has only up to 91 octane. But I don't know if the higher octanes are worth the money. I just put fuel injector cleaner every time I get an oil change.

 

See, I agree with you on that one. Lately I have been running premium fuel 90% of the time and the mileage is horrible. Before, I would put el-cheapo in most of the time and it would run forever.

 

i only put in sunoco 94, and i just filled up today 398.5 miles with 13.18 gallons, do the math its all about ur driving style btw its 30.24 mpg

 

I have a stock 1999 SE model with 91763 miles on it. We bought it used at 9,100 miles in 1999.

My drive is 62.2 miles each way, five days a week. Speeds vary between 60-80 MPH with the burst to 110 MPH or so depending on how mad the camper ahead of me made me or how much the speed limit driver in the passing lane ticked me off.

On the tank, I get between 410-440 miles-I get gas when the idiot light comes on and keep track in a tablet in the car. (Watching the price climb higher and higher.) The variance comes depending on how bad traffic was that week and how long I spent in the "speed up slow down" interstate race.

Cheers!
Torvan

 

when does the gas light come on cause my pointer was past E and it never came on, i wanted to keep on driving and see how much miles i can get but i got scared id stop somwhere

 

I have run only two full tanks through my auto 99 SE-L, both showing roughly 250 at the half, 375 at three quarters. Almost 26 mpg. I don't haul butt, and generally cruise at 65 - 68 on the freeway. Roughly 50c/50h driving mix.

Before the max, I drove a '95 TownCar (wonderful car!) that returned almost 22 mpg for the same conditions, so I must admit that I am slightly disappointed the maxima is not signifigantly better.....

 

Best i ever got was 380 with very mild driving best now is like 310 but i do have120K on my max

 

MPG is dependant on a lot of things and this is why we're seeing such huge differences. Things that make a difference are:

1) Altitude. Higher altitudes = lower mpg
2) Topography. More hills equal much lower mpg
3) Wheel/tire combo. Larger and wider rims/tires suck out a lot of MPG. I loose about 2 mpg running my LIGHTER 17s vs my 15s.
4) City/highway driving
5) Tranny. Autos typically get better mpg on the highway because they cruise at a lower rpm. Around town the autos are slightly worse.
6) Weather. In the colder months you mpg will be worse because the engine runs very rich when warming up. On a cold engine and a cold day, it's typical to get 8-9mpg on that first gallon. Some V8s do 5 mpg. That's why it's so important to warm up the motor quickly and not to drive short distances in the winter.


I get about 22mpg with 80% city/20% highway on 17s and using a lot of the rpm band. In straight highway driving I get about 26-28mpg depending on where I'm driving, hills or flatlands. Yes there are lots of hills and elevation changes in eastern Kansas


Dave

 

It's not just weight, more accurately, it's weight distribution with respect to the distance from the axis of rotation... (moment of inertia). Even though your 17's may be lighter, the concentration of mass further from the axis of rotation might (read : probably will) give them a higher overall moment of inertia. I guess there really is no hard rule... certain 17's may be better than 15's... it depends on the geometry and composition of the rim/tire. but in general, the larger the rim, the worse off you are!!! Also, tire pressure matters... lower pressures will adversely affect your perfromance (energy is lost due to flex/drag).

Interesting note, though... moment of inertia *should* not make a difference when you are cruising on the highway.. just during accelerations...

If you look at manufacturer specs, I was under the impresion that manuals had better mpg on the highway... there manual transmission is less lossy....


-Tom

 

on the highway, if u maintain proper speed limits a 5 speed should have better gas mileage because the person controls the rpm. You can be doing 55 in 5th gear leaving u at like 2k rpm versus auto which may throw u back a gear, well actually keep u in 4th and around 2.5-3.0+ rpm...

 

Well that's a gearing thing... not a control thing... an auto maxima won't run on less than the top gear at highway speeds unless you have O/D off, or are accelerating hard...

Honestly, though... my suspicion is that most of the fuel efficiency differences come about because of the increased power loss in an auto transmission...

-Tom

 

i get 14 miles per gallon, -- heavy foot, hacked resonator, and muffler, with intake