Did you see on the news (here in San Diego, don't know if it air'd anywhere else) how UPS gave some of their secrets/driving habits for their delivery drivers? How they map their route to make the most right turns possible. It is supposed to save time, gas but not so sure about mileage. The news people tested it out and it did yeild a greater savings in time/gas. I think you would have to have a some patience though for that though. They didn't go over the mileage though.

 

oh yeah, Gas does vaporize very fast. So I ususally practice pumping gas on the slower speed vs. the faster speed. Gas prices change pretty fast now a days so I haven't really compared the faster pump speed prices to the lower but it makes sense to me. I put gas about every 3 days so a few cents saved at each fill up adds up in the end. I get a pretty consistent 19mpg no matter if I drive more hwy or street miles.

 

1. Fill up your car or truck in the morning or at night when the temperature is still cool. Remember that all service stations have their storage tanks buried below ground; and the colder the ground, the denser the gasoline. When it gets warmer gasoline expands, so if you're filling up in the
afternoon or in the evening, what should be a gallon is not exactly a gallon. In the petroleum business , the specific gravity and temperature of the fuel (gasoline, diesel, jet fuel, ethanol and other petroleum products) are significant. Every truckload that we load is temperature-compensated so that the indicated gallonage is actually the amount pumped. A one-degree rise in temperature is a big deal for businesses, but service stations don't have temperature compensation at
their pumps.

2. If a tanker truck is filling the station's tank at the time you want to buy gas, do not fill up; most likely dirt and sludge in the tank is being stirred up when gas is being delivered, and you might be
transferring that dirt from the bottom of their tank into your car's tank.

3. Fill up when your gas tank is half-full (or half-empty), because the more gas you have in your tank the less air there is and gasoline evaporates rapidly, especially when it's warm. (Gasoline storage tanks have an internal floating 'roof ' membrane to act as a barrier between the gas and the
atmosphere, thereby minimizing evaporation.)

4. If you look at the trigger you'll see that it has three delivery settings: slow, medium and high. When you're filling up do not squeeze the trigger of the nozzle to the high setting. You should be pumping at the slow setting, thereby minimizing vapors created while you are pumping. Hoses at the pump are corrugated; the corrugations act as a return path for vapor recovery from gas that already has been metered. If you are pumping at the high setting, the agitated gasoline contains
more vapor, which is being sucked back into the underground tank, so you're getting less gas for your money. Hope this will help ease your 'pain' at the pump.

5. Do not top off your gas tank, when the pump shuts off, do not keep trying to add more gas..................a friend who owns a gas station says that by doing th is, you are actually giving the next customer a $1.00 worth of gas. The gas you pump stays in the hose and never makes it to your tank...........good to know.

6. *my own* Catch the bus.

 

Wow that sucks, I'm getting easily over 300 miles/tank and I'm not always light on the throttle, but I drive about 75/25 hwy/city. Something must really be out of whack to get only 200 miles/tank, maybe a combination of everything mentioned above.

 

Yup I do this one too.

 

i have 2 alpine type r's in the trunk there 10"s and im rolling on stock gs400 rims with 245/45/17 tires.

 

where can i get a tuned SAFC?!!!??

 

huh? Did you mean to post this in another thread?

 

Slow down, best I could suggest.

 

no lol, he ment thats what he has in his trunk, thats what weighting his car ,could be the issue with gas mileage.

 

slowing down, thats fine.
the problem is when you gas to accelerate, you'll be wasting more gas lol ..

 

Actually you would be surprised

Most fuel injector cleaner you buy will not make a dramatic difference because the instruction label tells you to use certain amount per gallon(s) of fuel. But what they dont tell you is that the concentration is pretty diluted. This saves them a lawsuit if one should ever put too much and blames the brand for recommending large dosage.

I ran a fuel injector cleaner through my car using a F.I canister. It's fed directly to the fuel rails with a 50:50 concentration of gas and addictive. This is very concentrated, but it takes a high amount to get the injectors cleaned. It's not a butt dyno or anything either because there was a difference in gauge pressure at the injectors before, during, and after the cleaning.

My highway fuel economy did gain 2mpg. Mind you the previous owner has always taken the car to the dealer for maintenance, and nothing but Chevron 91 octane has been in the tank.

 

I also meant to take it easy on the pedal. I know its tempting, but I have to stay easy on the pedal and keep the final drive RPMs at just below 2500 when cruising down the highway.

I also have 150 lbs of sandbags in the trunk for the winter, and I'm not doing too bad, lost only a mile to the gallon and gained some traction.

 

the problem is that i do keep it under 2500 most of the time. hahaa but still my best mileage was 210 on a full tank with highway . sighh. could it be my o2 sensor? im tired of pumping gas 2 or 3 times a week.

 

if your 02 sensors are failing, your CEL would come on. If you have no CEL, then you're fine.

I would try the fuel injector cleaner or some sort. Your car is 8 years old. I'm sure you have some sort of buildup in your engine by now.