how can I improve the gas milage on my mercury grand marquis?

Answer 1

Change air filter put a K&N one , Spark plugs , Use Syntetic Blend motor oil, put gas treatment and get a better exhaut sistem

Answer 2

Mercury Grand Marquis Mpg

Answer 3

Buy a free flowing air cleaner like a K&N air filter and a free flowing exhaust. These improvements will increase the engines ability to pass air through and create a better burn for your fuel and make more horsepower. Next get a throttle body spacer for it. This increases the torque that your engine produces making it have more low end power so you will not have to press the gas pedal as hard to get up to speed. And always make sure your tires are full and in alignment. The only problem with doing all of these upgrades is that the vehicle will become more fun to drive and you will probably find yourself hitting the gas a little harder just to feel it accelerate. After the fun wears off though you will notice substancial fuel mileage improvements. Hope I have been helpful.

Answer 4

Only fill up when it is cool outside and only run your car with a half full or more ... for some reason the last half of the gas tank seems to go through the car faster, probably something about the fumes again... Keep the tire pressure right and make sure that you use an engine cleaner about once a month when you fill the tank up. It won't give you stellar gas millage but it will increase it a bit.

Answer 5

Fill the tires full of air. Slow down and drive the speed limit. Don't do short running around trips. Starting and stopping alot lowers the milage (hense why "highway milage" is a selling point). Get a tune up, change the spark plugs & wires, the air filter, & the fuel filter out. Keep the AC off unless absolutely needed. Get any excess weight out (empty the trunk of unneeded things- the heavier the vehical, the more "drag" it will have, slowing it down, and using more gas to get you from point 1 to 2).

Answer 6

good question:: first off you can improve your mileage significantly. now thats the good news. the bad news if that you may have to break some bad driving habits to do it. from the mechanical standpoint you can improve mileage by switching to using synthetic oil, using a high flow air filter and by running your tire pressure 2 to 3 pounds higher than the recommended pressure, but never exceed the maximum!!! now as for really making a difference well that is up to your driving habits. here where i drive people regulary exceed the speed limit by 10 to 15 mph all the while bitching about poor mileage???? some ever drive 20 mph over the speed limit and wonder why they only get 10 mpg in that gas hog suv??????????? so my advice is slowdown and drive conservatively. you may get alot of dirty looks from those idiots driving 85 mph in a 55, but you will be smiling all the way to the bank, not them!!!!!!!!!!!!!!!!!!

Answer 7

Acetone In Fuel Said to Increase Mileage (http://pesn.com/2005/03/17/6900069_Acetone/) - Acetone said to improve the fuel's ability to vaporize completely by eliminating the surface tension that causes an increase in particulate vaporization temperature. (PESN; March 18, 2005)
A growing number of people are reporting their results, as tabulated here. Most have noted modest increased mileage (e.g. 2-15%), more power, more stable idle, faster start-up, cleaner emmissions. Part of that improvement is likely to be from the cleaning of the engine that the acetone accomplishes, without impinging lubricity. A few have not seen an increase in mileage at the concentration of acetone they tried. Too much acetone decreases mileage. Some have reported that Alcohol in the fuel tends to reduce the positive effects of acetone. No one has yet reported damage to their engine from acetone being added to the fuel. Several have soaked fuel components in pure acetone for extended periods and have not seen substantial effect other than some minor swelling.

Answer 8

Make sure you change the air cleaner! change the oil every 3 months or 3,000 miles, ritually! make sure the air pressure in the tires is all equal per MVSS. Throw in a bottle of dry gas, something that takes the water out of the gas, especially following a rainy season, & before the winter.

Answer 9

Get the proper tire pressure in the tires, which should be able to tell you on door jamb sticker, in driver's door area. Also take out unnecessary weight from the trunk, etc.

Answer 10

Make sure the car is properly tuned up and the tires are properly inflated.