Gas saving tips share yours here.

1. Install a vacuum switch that disconnects the compressor clutch when you are accelerating.
2. Run max air pressure in tires.

3. sit home and read about TRACTORS on this site

do not use the brakes- they only slow you down

That has the highest savings rate...

Inspect your cars systems. My thermostat malfuctioned disabling the torque converter lock. That was costing 5 mpg for two years.
A trip computor will teach you what habits improves your milage.

Last summer I ran about 25 gals of fuel through
my cub cadet riding mower. I mowed about 1 1/2 acres every 8 days. This year I am doing just 1/4 acre around the house. The rest is now 36 inch high brome grass. I'll cut it once with the Super H and the sickle and bale it up. Saving 80 dollars in fuel, lots of time and I'll probably have 40 bales of hay to sell.

Gordo

Like Gordo says, dont mow as much. No brainer there. Drive the speed limit, dont accelerate hard, Coast more-especially up to stop sign and red lights, Run all your errands at the same time,
Buy a bicycle.

Keep your air filters clean and your ignition timed a little fast. Run donuts on all four tires, they're skinnier and turn easier. Never use your brakes unless you are coming to a complete stop. Set your speed at the speed where your tranny shifts into the highest gear (about 42 in all but one of my cars, the one with overdrive needs to be driven about 60 for lowest rpm in the highest gear.)

One word: acetone (about a tablespoon to a full tank of gas) bought at your wife's favorite hair salon.

Run 5w oil (5w30) and change it regularly, not 15w40 or straight 30/30 and get sloppy about changes.

Keep the car cleaned out of excess stuff inside, it takes energy to drag around the extra 500lbs of stuff that accumulates in some cars. I already mentioned skinny tires where possible.

Completely remove the A/C belt. Or the whole A/C system. Pull the fuse on the heater fan, and remove the radio. The only accessories that you should keep are wipers and lights. Horn is optional.

Put a trickle charger on your car if you drive at night to keep that battery up. A low battery makes the alternator pull really hard and drops milage.
I experimented with a 12v radiator fan to force more air into the air cleaner. It helped--but not enough to counter the extra alternator load.

Tires should be filled to max psi allowed and checked (cold) frequently.

Don't idle to warm your car up. On cold days use a block heater. Choked engines are less efficient.

Smaller engines are better for fuel economy.

Manual transmission gets better economy. Even better: a high-speed rear end from another car of same make/model (that had an auto tranny.)

Dump the exhaust system. The muffler and catalyctic converter are not improving your mileage. If you aren't subject to regular emissions tests, raise car and take the exhaust system off starting before the converter. You can put back more exhaust pipe if you like.

Mixed results when 'chipping', but anything under the hood that's related to 'emissions' can be disabled. If you have a single O2 sensor on the exhaust manifold, change it regularly and if it's not staying clean or turning white, check and recheck your ignition and fuel/air mix.

Use the cruise control where possible.

Found a push power reel mower and the kids some powerade, walk to work( it's only 200' for me), use the ATV less, make less, way less trips to town. Biggest help is slow acceleration. I drive the wifes car and it averages 29 mpg, her driving about 24, her driving after AI said the wrong thing, about 10.

What does Acetone do for your mileage, Fill me in. How much improvement?

Wife drove my beloved '95 Lincoln Continental (a known gas-saver) on the freeway the other day, in the right lane, gritting her teeth at 60 MPH, with cruise control on (as opposed to my usual 75 MPH, "Granny bar the door" driving style, which we both enjoy). I normally get 24 MPG on those trips, she got 27.1. Pretty scary- you can increase mileage 13% by just driving responsibly? Where's the fun in that? I was hoping I would never have to grow up. . .

and drive with one eye on it to maintain high manifold vacume.

I read up on it at the link. some vehicles it might not play too well with, many people think it's fine. I see 4mpg boost when its time to change the air filter, 6-8 more otherwise. I got 24-28mpg on this car on regular (not super unleaded) before. '86 celebrity, virtually no engine mods, over 204K miles. throttle-body injection, 2.5L 4cyl.

supposedly acetone is supposed to improve gas vaporization be reducing surface tension.
acetone

Fix gas leaks in the tank and on the fuel lines

Don"t know where you"ve been but GM vehicles were doing that since 1984 or earlier right from the factory.
It doesn"t save fuel either. It frees up HP at WOT.

During drive-bys, fire all weapons to the rear of the vehicle: for every action there is an equal and opposite reaction. Similarly, all large bass speakers should be pointed towards the rear of the vehicle.

Your "gangsta slouch" should always be to the inside of the turn, allowing for better adhesion to carry fuel saving momentum through any turns.

Taking the AC out of commission reduces fuel mileage when the over heated passengers open the windows to cool down. Extra aerodynamic drag.

Drive fewer miles. Drive a more efficient vehicle.

B&D: "Fewer miles..." best tip I've seen here.

There was a thread on fuel milage a couple weeks ago and it was suggested that it's actually more efficent to run with the AC turned on than with the windows open. I tested this over the weekend driving 400 miles in my '98 Durango. At 70mph we got 15mpg with the windows open for 200 miles. With the windows closed (same speed) and the AC on we only got 13mpg for the second 200 miles. This was confirmed with the instant MPG readout and a miles/gallons calculation after refueling at the 200 mile mark.

While this may not be true for every vehicle I'm fairly convinced its more efficient to avoid using the AC. (I also acknowledge that 70mph in a Durango is not the most economical way to travel)

I got over 21 mpg 3 weeks ago with the expedition.I got tires up to proper press. got all extra weight out, accelerated slowwly, kept plenty of distance between me and car ahead so I used brakes less, used cruise only on level going so it wouldn't shift down for small grades. How you drive can make a big difference, but it will also p155 off the drivers who have not yet noticed the price increase.

I thought you were joking? Some of what you have listed is neither practical, or in some cases legal.

Was the 1st 200 conditons the same as the 2nd 200? Not a fair test........

Stay home!

It never ceases to amaze me at the people who run the roads for no other apparent reason than to go somewhere. These idiots that live around here will make a trip to the store everyday for a pack cigarettes, a 12 pack of pop and a gallon of milk. The old woman outback runs the roads more than a teenager....just has to get out of the house. Why doesn"t she stay home and clean that dive up?

People as a whole have to be going somewhere....even if it"s nowhere. Nope....none of my business many will tell me. But, it"s those habits the oil companies play on. They know people are going to run the roads and buy gasoline before they"ll buy groceries. Top priorities are a tank of gas, a pack of smokes and a carton of cola or beer...the rest can go to h3ll.

Those are treasonist words, "running the roads" is American as apple pie.

America is changing whether we like it or not.
We must change or drop out.

I still ride around all the time but sometimes its either on the harley on with the old chevy...... and i dont usually ride around just up to the local bar to drink off the days aggravation!!!!!!!! LOL!!!! haha

but in all seriousness i still take the trackhoe and bobcat down to the pond just to play around on the weekends!! sure its wasteing diesel but at least i am cleaning up the place since the tornado and dont just leave everything laying!!

my missus walks to work

The conditions were not identical, however they were similar; some hills but mostly flat, very little wind. While it is not as impartial a test as I would like, it was a pretty significant difference.

If anyone else has an instant fuel milage readout in their vehicle to try this test. Find a straight and flat road, set the cruise control on the vehicle and watch the instant fuel milage readout change. On my Durango it didn't change when the windows were opened, but it did drop when the AC was turned on. I suspect that not all vehicles are the same, but this is what I have observed.

Always fasten your seat belt before you start your engine. People tend to sit there idling their engine while fastening the belt and getting ready to drive.

i bought an old mule and some good hsrness and a saddle sold my 6hp tiller and a honda rancher bought a king suv [expidition]plow the garden with mule and get added fertilizer which has also went thru the roof if i want tio tour the neighbor hood saddle up the neighbor kids line up for a ride thinking about fencing the yard and getting rid of the riding mower no weed eater round up does a fine job. and as for the king i can get in it and noe worry about the idiots on the road19miles to the gallon han love it the old mule saves me enough to gas it up so far alos use him to drag up fire wood instead if the old massy 135

the drag really doesn't seem to impact mileage in a noticeable fashion. I've tried with the windows down, and even (don't do this on paved roads) driving with the driver's door open. But that compressor that's putting more load directly on the crank, that will bring you down by almost 5 mpg just being there. 3mpg if you never even turn it on, it's like a phantom load on your home electronics.

Doing the obvious to make you engine as efficient as it can be: Tune up, clean filters, have your fuel injectors cleaned. The pour in the tank stuff only works to maintain. Dirty injectors and carbon pillows on the intake valves prevent maximum atomization of fuel.
Keep your tires properly inflated. Fill the tires to what is recommended in the owners manual. The 1 exception is early Ford Explorers. 25psi just isn't enough, plus we have Ford and Firestone to thank for P.I.T.A. tire pressure monitor systems.
Drive a pickup? Get a tonneau cover or lightweight aluminum topper to cut wind resistance. I gained 2 mpg by adding a tonneau on a full size Chevy. A full performance exhaust upgrade is planned for a later date. Anything to help exhaust flow will help economy. DON'T disconnect that EGR valve. It will allow more timing advance on older non computerized engines before pinging. If it's computerized, don't unhook anything. The system is designed to work best with everything there.

Spinning a pulley on a bearing with no load doesn"t take 3mpg from the vehicle.
The AC compressor vs. wind drag story has been proven numerous times on the labratory test tracks. AC uses less fuel at 55mph even on vehicles rated at 40-50mpg.
Unless your vehicle is early 80"s or older and predates the serpintine belt. There is no separate AC belt to remove.

Customer stopped to pick up 2 fence chargers I repaired while he was hauling big round bales.He watched the mid day traffic go by and said,doesnt any body work around here.I usually have a long list of needed items when my truck goes out on the road.Running the roads is popular around here.

just like WWll, ask yourself "is this trip nessassary?" if not, dont go, if it is and its under a couple of miles, use alternate transportation, ie bicycle, if you have horses, throw the leather on one and use him, if its far, combine errands do more than one thing on the same trip, the best way to save gas is to not burn it