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Types Of Gas A Ford Expedition Takes (All Generations)

On this blog, we answer your questions about your favorite cars. Today we will take a tour and answer your queries on what kind of gas a Ford Expedition takes. We have gone through owners manuals of Ford Expedition produced since their first generation (1997), and here is your answer:

Ford Expeditions built between 1997-2008 were designed to use only regular gasoline with an octane rating of 87; For the 2008 – Present generation, 87 octane is recommended for the 5.4L Triton V8, and 91 octane is recommended for the 3.5L EcoBoost Triton V6.

That’s not the whole story. Below we go into more detail about the kind of gas you should or shouldn’t use for your Ford Expedition. We will also be discussing what type of gasoline leaves what kind of effects on the durability of your engine and its performance. Finally, we answer some other questions about the fuel requirements of the ford expeditions. So let’s get into it!

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Fuel Requirements Based On Engine Type

First-generation (1997-2002)

The first generation Ford Expedition uses regular gasoline with a minimum 87 octane number. Below 87 is not recommended. Other fuels even damage your fuel system and emission control system. According to the owner’s manual, 2002 Ford Expedition engines are made for “Regular” gasoline fuel systems and do not recommend “Premium” gasoline.

EngineFuel Requirement
4.6L 16-Valve V8Regular 87 Octane
5.4L 16-Valve V8Regular 87 Octane
4.6L 16-Valve V8Regular 87 Octane
5.4L 16-Valve V8Regular 87 Octane

Second generation (2003-2006)

EngineFuel Requirement
4.6L 16-Valve Triton V8Regular 87 Octane
5.4L 16-Valve Triton V8Regular 87 Octane
5.4L 24-Valve Triton V8Regular 87 Octane

Third generation (2007-2017)

According to the owner’s manual 2007 Ford expedition engines made for “Regular” gasoline uses gasoline with a minimum 87 octane number. However, a maximum 10% ethanol blend can also be used in the engine, which was increased to 15% in 2013.

In 2009, the flex-fuel capability was introduced in the 3.5L Ti-VCT Ecoboost Triton V6, which means it could also take combinations of two fuels instead of just one like regular/premium gasoline, E85, etc. (only in Flex Fuel Vehicles). With that upgrade, these engines could attain maximum driveability and excellent performance.

EngineFuel Requirement
5.4L 24-Valve VCT Triton V8Regular 87 Octane
5.4L 24-Valve VCT Triton V8/E85 ethanolRegular 87 Octane
3.5L 24-Valve  Ti-VCT Ecoboost Triton V6Regular 87 Octane (possible)/ Premium 91 or higher (recommended). Flex Fuel if it is specified on the vehicle

Fourth generation (2018-Today)

The current generation of the Expedition can run on 87 octane. However, 91 octane is recommended for optimum performance (such as when towing).

EngineFuel Requirement
3.5L 24-Valve  Ti-VCT Ecoboost Triton V6Regular 87 Octane/ Premium 91 or higher
3.5L 24-Valve  Ti-VCT Ecoboost Triton Platinum series V6Regular 87 Octane/ Premium 91 or higher

What Types Of Gasoline Can And Can’t Be Used?

Other than traditional gasoline, there is a wide variety of gasoline available on the fuel stations around the world today. For many of these Ford Expeditions have indicated whether these can have this kind of gas or not. Let’s explore it ourselves.

Reformulated Gasoline

Reformulated gasoline is a modern kind of gasoline that is preferably used in areas with high smog concentrations. It burns cleaner than regular gasoline. However, it is also beneficial for the reduction of air pollution. The United States EPA has officially recommended reformulated gas, as it has no toxic effect on air pollution.

Gasoline/Oxygenated Blends Or E-85

Ford Expedition could not handle oxygenated blends or E85 until Ford Expedition 2007-2008 was designed, which allowed a maximum of 10% ethanol blend in the fuel system.

After that, in 2009 first FFV (Flex Fuel Vehicle) was introduced, which allowed the use of the most common ethanol blend (E75-E85), and that continued to 2012.

From 2013 regular unleaded gasoline increased its ethanol blend from 10% to 15% in standard Ford engines, and if you have the Flex Fuel Vehicle, you are allowed to use E85 in your engine.

Model IntervalsEthanol BlendFlex Fuel Vehicle
1997-2006Not compatibleNo
2007-200810% EthanolNo
2009-201215% Ethanol/ E85Yes
2013-Today15% Ethanol/ E85Yes

To make sure whether or not your vehicle is flex-fuel-appropriate, you can take a look at the gas cap. If you find a yellow gas cap, it suggests that your vehicle is FFV (Flex Fuel Vehicle). If you don’t see it on the cap, sometimes it’s mentioned on the gas door, on the inside.

Gasoline With Added Materials

According to owner’s manuals of 1997-Today of Ford Expedition, it is mentioned not to use additive materials to your engine because they could harm your engine in many ways (especially the ones with metallic-based compounds), which might lead to the eradication of vehicle warranty.

Engine generationMetallic based additives
First-generationDo not use in any model
Second generationDo not use in any model
Third generationDo not use in any model
Fourth generationDo not use in any model

Gasoline With MMT

MMT is methylcyclopentadienyl manganese tricarbonyl which is a kind of octane booster. It is prohibited to use in any of the Ford Expedition engines.

Engine generationMMT
First-generationDo not use MMT in any model
Second generationDo not use MMT in any model
Third generationDo not use MMT in any model
Fourth generationDo not use MMT in any model

Biodiesel

Biodiesel is suggested to be compatible with diesel engines only, and If we are to discuss Ford Expedition, you can not because Ford Expedition doesn’t come with the diesel engine. However, we might get to see expeditions on diesel in the future.

What If I Hear A Knocking Noise From The Engine After Refilling?

Knocking noise from the engine could be for many reasons, such as poor quality of gasoline or lower octane number.

If you have used the right kind of fuel and hear a slight sound of knocking from the engine, then it’s probably not a thing to worry about. Still, on the other hand, if you have used unauthorized fuel in your vehicle and hear loud knocking then you are likely using gasoline with a lower octane number or some kind of gasoline restricted in the owner’s manual.

When you hear a knocking noise, you can add premium gas, run your vehicle, and see if the knocking goes away. If the sound is loud, to begin with, immediately take your vehicle to a certified dealership to have it inspected.

Does the Ford Expedition Have Good Gas Mileage?

2018 – Present

The 2018 – Present Ford Expedition 2WD has a combined MPG of 17-23, and the Ford Expedition 4WD has a combined MPG of 17-22. The Ford Expedition MAX 2WD has a combined MPG of 17-23, and the Ford Expedition MAX 4WD has a combined MPG of 18-21.

EngineLowest Combined MPGHighest Combined MPG
Ford Expedition 2WD1723
Ford Expedition 4WD1722
Ford Expedition MAX 2WD1723
Ford Expedition MAX 4WD1621

2007-2017

The 2007-2017 Ford Expedition 2WD has a combined MPG of 15-21, and the Ford Expedition 4WD has a combined MPG of 15-20. Ford Expedition EL 2WD has a combined MPG of 15-20, and the Ford Expedition EL 4WD has a combined MPG of 15-19.

EngineLowest Combined MPGHighest Combined MPG
Ford Expedition 2WD1521
Ford Expedition 4WD1520
Ford Expedition EL 2WD1520
Ford Expedition EL 4WD1519

2003-2006

The 2003-2006 Ford Expedition 2WD has a combined MPG of 12-17. In contrast, the Ford Expedition 4WD has a combined MPG of 12-16.

EngineLowest Combined MPGHighest Combined MPG
Ford Expedition 2WD1217
Ford Expedition 4WD1216

1997-2002

The 1997-2002 Ford Expedition 2WD with 4.6L engine has a combined MPG of 14-19, and the Ford Expedition 2WD with 5.4L engine has a combined MPG of 12-17. Ford Expedition 4WD with a 4.6L engine has a combined MPG of 12-16, whereas the Ford Expedition 4WD with a 5.4L engine has a combined MPG of 11-15.

EngineLowest Combined MPGHighest Combined MPG
4.6L Ford Expedition 2WD1419
5.4L Ford Expedition 2WD1217
4.6L Ford Expedition 4WD1216
5.4L Ford Expedition 4WD1115

What’s The Gas Tank Size Of The Ford Expedition?

First-generation (1997-2002)

EngineQuantity
Ford Expedition 2WD     26 gallons or 98.4 liters
Ford Expedition 4WD     30 gallons or 113.6 liters

Second generation (2003-2006)

EngineQuantity
Ford Expedition 2WD     28 gallons or 106 liters
Ford Expedition 4WD     28 gallons or 106 liters

Third generation (2007-2017)

EngineQuantity
Ford Expedition 2WD     34 gallons or 128.7 liters
Ford Expedition 4WD     34 gallons or 128.7 liters

Fourth generation (2018-Today)

EngineQuantity
Ford Expedition 2WD     23.6 gallons or 89.3 liters
Ford Expedition 4WD     23.6 gallons or 89.3 liters
Ford Expedition MAX 2WD     27.8 gallons or 105.2 liters
Ford Expedition MAX 4WD     27.8 gallons or 105.2 liters

How Much Does It Cost To Fill Up Ford Expedition?

In New York, filling up a Ford Expedition 2021 will cost you around $83.96. For the Ford Expedition MAX 2021, it will cost you approximately $98.91.

StateModelCapacityCost
New YorkFord Expedition 2WD23.6 gallons$83.96
New YorkFord Expedition 4WD23.6 gallons$83.96
New YorkFord Expedition Max 2WD27.8 gallons$98.91
New YorkFord Expedition Max 4WD27.8 gallons$98.91

In Oklahoma, a Ford Expedition 2021 will cost you around $71.98, whereas a Ford Expedition MAX 2021 will be about $84.79, the cheapest of all states.

StateModelCapacityCost
OklahomaFord Expedition 2WD23.6 gallons$71.98
OklahomaFord Expedition 4WD23.6 gallons$71.98
OklahomaFord Expedition Max 2WD27.8 gallons$84.79
OklahomaFord Expedition Max 4WD27.8 gallons$84.79

In California, a Ford Expedition 2021 will cost you around $109.07, whereas a Ford Expedition MAX 2021 will be about $128.49, being the most expensive all around the United States.

StateModelCapacityCost
CaliforniaFord Expedition 2WD23.6 gallons$109.07
CaliforniaFord Expedition 4WD23.6 gallons$109.07
CaliforniaFord Expedition Max 2WD27.8 gallons$128.49
CaliforniaFord Expedition Max 4WD27.8 gallons$128.49

Sources