Ways to add MPG in a $$$ Gas Price Economy!

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LG_123

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Can you share the specific p/n you used. I’m familiar with colder plugs from a previous vehicle that I supercharged. Would like to try this out in the Expedition. Thanks
I’m also interested in getting the part number. I don’t know anything to big about spark plugs but would like to try to change mine for the first time.

I have 46,000kms and still on the original plugs.
 

rd618

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As others have said, speed and air resistance is a big deal and proper tire inflation. For most people, the simple change of doing 65 vs 80 on a 20 mile commute can be more than $7-10/week in fuel savings or more. And the cost is essentially 1 extra song on the radio as you drive in.
 

Alwaysthinkin

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I do suggest better driving habits, including reducing highway speed when possible. I'll drive 75 at times, especially on a long trip, but I understand that I'm paying for it with increased consumption and have no valid reason to complain. Slowing down is the absolutely most effective way to increase mpg, but everyone has to make their own decision. Drive fast and burn more, or drive slow and burn less. One might also point out, if you dislike low mpg numbers, why drive an Expy in the first place? I happily drive my Expy and use only premium pure gasoline fuel, and have no complaints with mpg. For a large heavy vehicle, I think it does quite well. The nearest city is 40 miles, so at 60mph, I lose possibly 7 minutes in time, but save $$ at the same time. In the end, which is more important?
Couldn't agree more, we should be allowed to make our own choice regarding legal speed of choice vs better gas mileage.
 

duneslider

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Here you go...This company will pregap them lower too if you want it. For a cost of course!


Yes, they will help even stock. You will notice a smoother idle, and should see a MPG increase.
So why a smaller gap? I know that FI usually benefits from a smaller gap but is the opinion such that the factory gap is not a gap optimized for FI and is actually larger than it should be for the application?

My experience with messing with plugs is mostly with 2 stokes, going colder would seem good at first but they would tend to foul especially when the temps were down. I know that FI is a different animal but just curious and trying to learn a little here.
 

LokiWolf

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I’m also interested in getting the part number. I don’t know anything to big about spark plugs but would like to try to change mine for the first time.

I have 46,000kms and still on the original plugs.
Posted 3 minutes before you asked...

 

LokiWolf

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So why a smaller gap? I know that FI usually benefits from a smaller gap but is the opinion such that the factory gap is not a gap optimized for FI and is actually larger than it should be for the application?

My experience with messing with plugs is mostly with 2 stokes, going colder would seem good at first but they would tend to foul especially when the temps were down. I know that FI is a different animal but just curious and trying to learn a little here.
These motors run hot. Even in cold weather, intake temps are warm. The factory plugs breakdown because of the heat, and they aren't made of the best materials. Ford used to put excellent plugs in the 3.5's. To the point that one of the recommended plugs when tuning was the older plugs. You used to be able to find them, as a Ford Performance Part#, and they were designed for the Ford GT if you looked up the number. Those are now really hard to find. Then many hit on these NGK's, and come recommended from several tuners even for Stock applications because of the crappy stock plugs. If stock I would not go any lower than 0.028. If you are stock, and plan to stay that way, and don't run hard, or tow a lot, do 0.031(Factory). If you are tuned, plan to tune, or run it hard, start at 0.028. If you are already tuned, talk to your tuner, and go with their recommendation.
 
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DWs-TTEB

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I’m also interested in getting the part number. I don’t know anything to big about spark plugs but would like to try to change mine for the first time.

I have 46,000kms and still on the original plugs.

NGK P/N

95605​

 
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DWs-TTEB

DWs-TTEB

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(3.) I threw on the stock wheel package today. Used ForScan to set tire size & re-learn vehicle config. Will post this Friday evening with the MPG gains.
Post todays 52 mile round trip commute, my AVG MPG is 20.6. Up 3.4 MPG running my fancy wheel setup of 17.2 AVG MPG.
 
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VBreithaupt

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I been getting solid 20 mpg on 2 hour highway drive going up north in Michigan with just me and with it full of people!
My suggestion
Run Amsoil synthetic oil
Put tires at 2-3 degrees higher of air pressure
Run no higher then 77 miles per hour
Have the cruise set as much as possible
Travel at off time when there is least amount of traffic
Keep car clean and waxed
Wind direction plays a factor as well

In town mpg good luck
With camper there is a sucking sound that is very faintly heard
 

sjwhiteley

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I been getting solid 20 mpg on 2 hour highway drive going up north in Michigan with just me and with it full of people!
My suggestion
Run Amsoil synthetic oil
Put tires at 2-3 degrees higher of air pressure
Run no higher then 77 miles per hour
Have the cruise set as much as possible
Travel at off time when there is least amount of traffic
Keep car clean and waxed
Wind direction plays a factor as well

In town mpg good luck
With camper there is a sucking sound that is very faintly heard
Personally, I’d run without cruise - depending on traffic conditions. I got better mileage without it on my daily commute. With light traffic and slight hills, allowing the vehicle to slow down on the incline prevented an increase in immediate consumption.

I also found a crosswind more detrimental than a headwind. That may be because of other factors, however, so cannot confirm or verify is objectively.

As an aside with regards to speed (slowing down) you really start moving to a reducto-absurdium argument: if 55 is better, why not 45? Or 35? Or walking? Would that same argument conversely apply to an aerodynamic electric vehicle driving faster? If you can drive 100mph and only consume an additional 20% kWh, and get that from solar panels, energy consumption is irellavant? Getting there faster means fewer cars on the road.
 
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