View Thread: Increase gas mileage ideas????


d1rt chaser
i have gotten a 91 toyota truck with the 4cyl engine automatic trans and it seems to use alot of gas for a small truck, 58000 miles and in mint condition it has new plugs wires etc. are there ant tips or tricks on getting better milage from this truck such as maybe a electric fan- advancing timming a little or what????????

Sia Bani
I'm not too sure about how much you could increase the efficiency on the 4, but on my 8, exhaust and intake REALLY helped the mpg. When I drove like a normal person for one tank, I got 16mpg in the city in the Tahoe!

lsr78
Also possible he has clogged / malfunctioning injectors which seriously f*cks up your mileage.

scubie02
Some of the higher end air filters can actually make a difference. I got an extra 25 miles on average out of every tank when I put a K&N in my car. May not sound like that much, but if you figure thats roughly a gallon of gas, figure a conservative value of $1.50 a gallon, and two to three tanks a week, its a couple hundred bucks a year, which easily pays for the filter plus and means you get a little more cruising room.

3.0L V6
Drive it like there's an eggshell between your foot and the gas. Other than that, you've probably done everything you can do to improve fuel economy

BRealistic
Originally posted by d1rt chaser
i have gotten a 91 toyota truck with the 4cyl engine automatic trans and it seems to use alot of gas for a small truck, 58000 miles and in mint condition it has new plugs wires etc. are there ant tips or tricks on getting better milage from this truck such as maybe a electric fan- advancing timming a little or what????????

only one post?

First, make sure everything is in proper tune. Spark plugs, wires, cap, air filter, timing. If your fuel mileage is way down, maybe the cat is clogged?
But going to synthetic oils in the engine, trans and rear end may help. Running hard street tires at maximum pressure also helps. Is this a 4x4 truck? You might want to swap the rear stump for a higher gear to help your fuel economy. Also, I have headr that taunau(sp?) covers help. good luck.

FabUlous
tonneau

ahahn
Here is a cheap way to improve mileage. If the bed of the truck is empty, just drop the tailgate. My does that whenever he isn't transporting anything and it is good for an extra 3-5 mpg. Smoother airflow, helps the aerodynamics.

BRealistic
Originally posted by ahahn
Here is a cheap way to improve mileage. If the bed of the truck is empty, just drop the tailgate. My does that whenever he isn't transporting anything and it is good for an extra 3-5 mpg. Smoother airflow, helps the aerodynamics.

That is BS- well, at least on ex cab Ranger/Mazzers. I did an experiment last year to see what effect the tailgate has on the truck's wind drag. There is a large steep four lane hill near my other property. I started going down and at a certain point and speed, I took truck out of gear and coasted down. Then I noted the speed at another point one mile down (bottom of hill). I did this twice with the tailgate up and twice with the tailgate down, switching between each run. They all had the exact same results.


..and who is the spelling nazi?:badass:

:)

Sia Bani
There may not be a noticeable difference in your speed in short distances, but in fact there is.

There is more drag with the tailgate closed. Over long distances (such as your whole tank), the difference will be more noticeable, and should improve your mpg. It may not be as significant as you'd hope, but it will definately help and not hurt.

ahahn
I can't speak for the Mazda/Ranger, but on my friend's 4WD Dakota with the 3.9 V6, it made a difference. He could get an extra 25 or so miles per tank. Yeah, it doesn't sound like much, but for a poor college student, that is the difference between making it home or walking the last stretch of the trip.

Aquemini
I've never tried the whole "drop the tailgate" thing but i've found that the "eggshell" method works well. I average 24mpg in my '93 Nissan 2 wheel drive. It also helps to do a tune up every once in a while too.

Sia Bani
Ok, this thread has inspired me to do the impossible, or at least attempt it.

Next tank, I will try to drive like anyone's mother. (basically, I shouldn't hear the roar of the intake.) I will pretend there's an egg shell and see what kind of mpg I get streets and/or highway. Should be a good experiment. Last time, I got somewhere around 17mpg.

ahahn
Good luck trying to do that for the entire tank. I never last that long. Of course, you could always do it for a half tank, and figure out your average from that. But on some vehicles, the last half always goes quicker than the first half. On my dad's Nissan, as soon as the needle hits 1/2 tank, you can literally see it head down to E.

Sia Bani
Ya, I remember how hard it was last time I tried. It's nearly impossible, I know.

Aquemini
I should add that because i live in a very rural area and I don't drive on the highway much I rarely travel over 60mph. Nor does my tach ever go over 3000 rpm's. I do this on purpose btw. Gas is expensive and Papa John's doesn't pay much. :(

Sia Bani
Dude, your comment is making me order some pizza right now. Bastard. :banghead: