What's the best way to increase my MPG?

[Peto]

Use mass and momentum to your advantage....

[Bob Hyatt]

A good way to learn to reach a max economy driving style is to put a glass of water in the doghouse cupholder. Fill it to near the top, leaving no more than 1/8" at the top. Now drive WITHOUT spilling any water. You will learn how to minimize braking and acceleration very quickly. Also teaches you to make smoother turns and such as well...

Forget about spark plugs, air filters, etc. It takes X amount of gas to make Y watts of power, which is what it takes to move a large cinder block at your chosen speed. NOTHING you can do will reduce that except either less mass or less resistance. Neither is practical unless you are willing to downsize.

[Russ Silber]

Originally Posted by Bob Hyatt

A good way to learn to reach a max economy driving style is to put a glass of water in the doghouse cupholder. Fill it to near the top, leaving no more than 1/8" at the top. Now drive WITHOUT spilling any water. You will learn how to minimize braking and acceleration very quickly. Also teaches you to make smoother turns and such as well...

Forget about spark plugs, air filters, etc. It takes X amount of gas to make Y watts of power, which is what it takes to move a large cinder block at your chosen speed. NOTHING you can do will reduce that except either less mass or less resistance. Neither is practical unless you are willing to downsize.

Amen[emoji373]

[Fiesta48]

I always open up the air intake so the engine does not have to suck as hard. I get maybe .1 more mpg but much better throttle response.
Then I drive so I use minimum throttle to maintain a speed by watching a instantaneous mpg meter. I don't give it much throttle going uphill. And let the downhill rebuild my speed. Holding a steady throttle as possible.
I always get 1-3 more mpg than anyone else on our diesel and more on cars. I never go over 60 mph cruising, but faster sometimes downhill.

[OlYeller]

Follow all the above advice and you'll get better gas mileage, maybe even 8.9 MPG!

[Geo19Irv]

On an engine with less than 100k miles I use Mobil 1 or Amsoil full synthetic oil
(RV, car, motorcycle, generator) I can report a 10% increase in fuel mileage.
Good oil is your best investment.

[Mr_D]

Sounds like the OP is already into the "unreachable" mileage for gas rigs. Ever since I had gas rigs (1988) I used 8 mpg for budgeting. Even in my 1988 Okanagan 17' Type B with a GearVenders overdrive unit I never got over 9.

[steve52]

Originally Posted by RVBlogger

Hello All,

I own a 2008 Gulf Stream Conquest with Ford V-10 engine, which is a Class C RV, and I get about 8.8 mpg.

My question is can I increase my MPG somehow other than driving 55 mph and making sure my tires are inflated properly?

No. Be pleased that it's not worse. 8.8 is pretty decent, IMHO.

[twinboat]

Originally Posted by Fiesta48

I always open up the air intake so the engine does not have to suck as hard. I get maybe .1 more mpg but much better throttle response.
Then I drive so I use minimum throttle to maintain a speed by watching a instantaneous mpg meter. I don't give it much throttle going uphill. And let the downhill rebuild my speed. Holding a steady throttle as possible.
I always get 1-3 more mpg than anyone else on our diesel and more on cars. I never go over 60 mph cruising, but faster sometimes downhill.

Opening the air intake on a diesel may help with mileage, although probable immeasurable, due to the open air system. Diesels varry the amount of fuel injected into the combustion chambers to control power.

Gas engines have throttle plates in the air intake. They restrict the air flow to control RPM and power. You could remove the air filter and not gain any power at light throttle. The throttle plates are the restriction.

The only gain may be realised when at full throttle and that's not the economic way to drive.

This country ( USA ) has been battling to increase fuel economy for years. If these simple fixs worked, they would have done them.

[oakcreekeric]

While mileage may vary... I really feel installing the 5-star tune on my 2012 easily helped me pick up about .5 more miles per gallon.. I also liked the smoother/quieter ride, given the new shift points...

I really didn't like my engine screamin' every time I went over an overpass..

[Unplanned Tourist]

Other than a block of wood under the gas pedal, there is no easy cure here.
Seems like the OP is doing just fine now.
Happy Glamping.

[F4Gary]

Originally Posted by Geo19Irv

On an engine with less than 100k miles I use Mobil 1 or Amsoil full synthetic oil
(RV, car, motorcycle, generator) I can report a 10% increase in fuel mileage.
Good oil is your best investment.

No.

[RoadDogYVR]

To put fuel consumption in perspective, my gasoline 2.7 litre Ecoboost truck pulling a trailer that weighs about 6500 lbs wet (for a combined gross vehicle weight of around 11,000 lbs - scaled) I get about 9.5 - 10 MPG in flat terrain doing 60 MPH and 8.5 MPG or slightly less pulling West Coast grades of up to 7%. Empty truck not pulling a trailer, I get close to 20 MPG if I stay out of the Loud Pedal in mixed city/highway driving.

Now, my buddy with a brand new Volvo tractor is getting 8 - 9 MPG running mostly US Interstates pulling 80,000lbs (gross vehicle) and I get about 4.5 - 5 MPG in my work truck pulling 140,000 lbs 50% of the time and running about 40-50,000 lbs (empty) the rest.

[twinboat]

Originally Posted by Geo19Irv

On an engine with less than 100k miles I use Mobil 1 or Amsoil full synthetic oil
(RV, car, motorcycle, generator) I can report a 10% increase in fuel mileage.
Good oil is your best investment.

So, I can gain 1 MPG, 10% of 10 MPG, by changing my oil.

Increadable !!!!