Frank Fontaine

I like to buy Sunoco 93 at a station in a bad neighborhood, because it sells super for 7 cents less than the unbranded stations, and only 12 cents more than 87. Many people seem to be put-off by the bulletproof glass and shell casings in the parking lot, but I don't mind. Just don't get to that neighborhood very often.

Anyway, I managed to squeeze in 16.4 gal, so I only had 2.1 left. And yes, unfortunately, it screwed up my fuel sending unit!!! Now it only registers 7/8 full when completely full. It's amazing how these problems with Nissan are only a minor annoyance. But when the car was new, I was really miffed that the needle did that. 3 sending units later, I don't care but in a way think it's funny.

THT

iTrader: (8)

Congrats; better than average fuel economy rules.

~THT

Loe max

iTrader: (6)

On all my Maxima's, the needle shoots above F whenever I fill it up
That sucks that you screwed up your sending unit.

pavelsmax

iTrader: (12)

mine used to go above till i had the needles off now it goes right to the line

nismos14

iTrader: (56)

i got 395.1 and filled up 14.64 gallons, i dont think 395 with 16.4 is that amazing

Iilac

iTrader: (65)

I went 430 miles and filled up with 15.57 gallons, so u can do better....

Bobo

I've gone 550 before, but only twice. 500 plus straight highway driving is no big deal if it isn't over 75 mph. Frank didn't indicate what kind of driving the 395 consisted of.

Nismotic

iTrader: (25)

nice. but if you're jamming /topping off the fuel, it may flag an EVAP code.

chillin014

iTrader: (67)

Awhile back someone said they replaced a couple parts on their car and they immediately got better gas mileage. I can't find the thread but I'd like to know, if anyone knows. I get like freakin 200 to 250 to my tank.

Bobo

If I got 200 to 250 on a tank I would park the car until I figured out the problem. Thats disgusting gas mileage. The worst I've ever had is about 350 and thats commuting all week in rush hour traffic, with lights etc.

chillin014

iTrader: (67)

I live in houston so yeah there's a crappload of traffic. Not only that but sometime me and my gf "chill" in my car for awhile and my car is just running in park, I suppose a couple of hours of that wastes a bit of gas. And I take back 200, its more like 250. Plus, I gas it a lot at green lights and stuff. Does this justify? Or are you still appalled and disgusted

BlueC

iTrader: (5)

Yea 395miles for 16.4 gallons equals out to 24mpg. My last trip I did 292 miles on 9.95 gallons, which is roughly 29mpg, that was with mostly highway and some city driving. Helped that I had changed the fuel filter and had changed the oil before that trip.

Frank Fontaine

It's not. My point is that it seems best to not let the tank get low, because not only does the pump work harder but on these Maximas it seems to have an effect on the sending unit. I used to never let it go below say 5/8 empty or 3/8 full. But with the price of gas so high, I like to fill-up at that cheap Sunoco station.

Amazing would be for the price of gas to not go up another 10 cents a gallon this week. Oil flirted with prices of a barrel below $50 this week, yet gas still went up.

stikine

In kilometers and litres I went 660 km on 60 litres of fuel - quite empty but still about 2 canadian gallons. (91 octane)
Conversion is 412.5 miles on 15 US gallons
type of driving was 60% hiway and 40% city
Stikine

Bobo

I audited your numbers (I'm an **** accountant), the above conversion is actually 410.1 miles on 15.84 US gallons. For 60% highway, 40% city, that's not too bad. How fast was the highway driving - must have been 70 mph (112 kmh) or less.

S103100F

iTrader: (1)

dam yo i see those numbers i go nuts about i get about 200-230 max on my car what do you do with your cars how do you get so much is like driving some civic or some thing

Bobo

You should have saved the money on the y-pipe, S103100F, and got your car running properly. That's the worst mileage I've seen out of all the gas mileage threads I've noticed on this board. I can see you live in New York city, but that is absolutely horrendous fuel economy.

4DRSpeed

iTrader: (22)

I usually hit about 250-300 depending on how I drive. It's mostly city. I just replaced two O2 sensors yesterday so hopefully my mileage will be even better.

brownsvillemax

i know what thread u are talkin about... what they did is they used a 300zx fuel filter and a k&n filter witha hacked air box. i drive my car hard always gasing it in city driving conditions and i get 310- 320 miles on average. when i drive from brownsville to houston i get 390 miles exactly everytime and i usually take it at 80-90mph. chillin what part of houston are u from....

chillin014

iTrader: (67)

thank you!!!! AND YEAH im gonna check those filters..i can see i'll hardly touch 300 on this tank im on.

chillin014

iTrader: (67)

which ones?

96explorerxlt

Thats pretty good but I've clocked close to 29 mpg sometimes. The previous owner said he could pull 31 mpg on the highway. I think I have a heavier foot than he does, and the car is getting a little older.

Jason

chillin014

iTrader: (67)

i havent really calculated my MPG yet i just reset my distance thing everytime i fill up.
btw what kind of wheels are those? they look nice

Emtx

wow you guys get some badass gas milage. I get 335 miles off a full tank with a lead foot with Premium Chevron gas

Frank Fontaine

I think the age does have something to do with it. I have not gotten better than 28 in a couple years. But when my car was new, I did get about 31-32 coming back from Montreal--it's legit because I repeated it many times, exact same trip--did around 71-73 mph with cruise control. On the way up was about 28-29. One day on the way up I got 24 and was horrified--turns out I had over-oiled my K&N.

S103100F

iTrader: (1)

just ordered one i am getting it next week will see if is gonna make some diff

4DRSpeed

iTrader: (22)

Replaced the two front ones with Walker's O2s.

nismos14

iTrader: (56)

I get anywhere from 23-33 mpg all depends how i drive. My car is a 97 with 136500 miles and i dont think age nor mileage has squat to do with it. I've driven 300 miles so far on this tank and the needle is right on the middle line. Usually if i drive hard i get 200 miles up to this point so I know the way you drive has ALOT to do with how the car drinks or sips gas.

Bobo

I don't think age has a great deal to do with fuel economy either. I believe its more dependent on: speed, tire inflation, wind resistance to some extent (headwind vs tailwind on a long trip), and the conditon of oil, fuel filter/injectors, spark plugs, air filter, coils etc. Even on a higher mileage vehicle, if the foregoing parts were newer, fuel economy should be pretty decent.

Frank Fontaine

Maybe age doesn't have anything to do with it, I can't be sure because my car will never do that Montreal trip again to see. Besides tail and head winds, I have a hunch that each direction of a trip involves different amounts of downhill and uphill driving, because it always used less fuel coming back from Montreal than going. The same is now true of Philadelphia to Connecticut, always gets better mileage on the way back. But for whatever reason, in the last 2 years I have never been able to best 28 mpg, whereas it was easy when the car were in its first 4 years of life.

nismos14

iTrader: (56)

hmm going from nj to montreal on the way up i got 32 mpg going 90+ pretty much the whole way up. I think on the way back i got about 28 mpg.

killerVQ30DE

Thats crazy good KM's to the tank, I get about 450km's to the tank, 20% highway, 80% city- blasting off the lights

Bobo

That's because you've got gravity working against you being down under. Just kidding.

Frank Fontaine

Man, your car is a serious friction-fighter. I did that trip about 30 times a year from 1998 to 2000, and kept all the records in an Excel spreadsheet, and I always got higher mpgs on the way back than up. Always stopped in Plattsburgh to fill-up, and it was always the same number of gallons to fill, within a couple of tenths of a gallon. Didn't do anywhere near 90, though. About 72 on avg., and could only break the 30 mpg barrier on the way back to Albany.

I'll never know what the car can do today because it will never make that trip again. But like I said, it's never broken 28 mpg in years, but can do 28 from NYC back to Philly. Less on the way up.

For 28 mpg I'd rather be driving the C6 with the LS2 motor--400 hp. Amazing what the old pushrods and 2-valves are still capable of!

BlueC

iTrader: (5)

Heres an interesting finding.... I got 30mpg on my way back from a trip last weekend (90% highway 10% city), and now when I just filled up again, I found myself getting 20mpg (80% city 20% highway). I think I have an exhaust leak near my rear header (possibly EGR), could that decrease the effiency in mpg? I hit WOT only a couple times this week, ive been babying a bit lately around town.

EDIT: Nevermind, factory specs is 21/28, so im doing better in the hwy catagory and a little worse in the city.

Bobo

I've always done worse on straight city and better on straight highway driving than the EPA estimate, about 19 and a bit in the city and 29 - 31.5 on straight highway at a reasonable speed.

stikine

you may have me on the conversion to us gallons - I used 4 litres per US gallon. What is it... 3.98?
As far as the the miles go I am pretty sure it is kilometers times .625 - unless you don't have 5280 feet in a mile. And you are right on the speed - only brief moments above 70 mph - usually at full throttle!

Stikine

Bobo

Not to be **** (but I am), use 3.785 litres per US gallon and 0.621 miles per kilometre. These are the recognized conversion factors. When in doubt, refer to page 0-19 in the Haynes manual for a comprehensive list of conversion factors covering such areas as: length, volume, mass, force, pressure, torque, vacuum, power, velocity, fuel consumption and temperature.

There will be a quiz on Tuesday, lol!

S103100F

iTrader: (1)

can this be true bad O2 sensor but cel dont light up for some reason ?

Bobo

What's this got to do with thread?