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Old 04-26-2018, 01:08 AM   #1
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Gas vs. Diesel - New 2018 F150

We've had a lot of gas vs diesels discussions. A new case study to this, is the introduction of the diesel F150 in the 2018 model.

It'll be another interesting comparison as specs and performance impressions make their way into the media. Both variants also use the same 10-speed tranny. How appropriate, they have an Airstream in tow

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Power numbers:
F150 Diesel - 3.0L Powerstroke V6: 250hp @3250rpm, 440tq @1750.
F150 Gas - 3.5L Ecoboost V6: 375hp @5000rpm, 470tq @3500.

MPG 4x4 ratings:
Diesel - 20 / 25 / 22 combined. 26 gallon tank
Gas - 17 / 22 / 19 combined. Option 36 gallon tank

Capacities:
Diesel max tow - 11,400lbs
Gas max tow - 13,200lbs

Diesel XL max payload: 2020 lbs
Diesel King Ranch 4x4 max payload: 1378 lbs
Gas V8 XL max payload: 3270 lbs
Gas Ecoboost Platinum 4x4: 2030 lbs

No driving impressions yet from the media as that'll come out in a few days.

At a glance, it's obvious the gassers outclass the diesel in sheer capacities and power. Both power and torque in case of the ecoboost.

The diesel is postured as the efficiency option. If power and capacities are priorities, the gasser varients are going to be the ticket. Hopefully the diesel delivers on the towing experience for those that want it, because yet again, the diesel is not the one that will be winning races to the top of the hill. No mention of a diesel brake option yet.

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Old 04-26-2018, 02:09 AM   #2
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I'm going to have to see the door-pillar tag at 2030 lb for an Ecoboost Platinum before I believe 2030 lb payload. I don't think they make SuperCab+Platinum do they? On my '17 SuperCrew 4WD Lariat with no sunroof or heavy massaging seats (but with box-side steps) my placard payload is 1636 lb.
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Old 04-26-2018, 02:34 AM   #3
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Quote:
Originally Posted by pteck View Post
We've had a lot of gas vs diesels discussions. A new case study to this, is the introduction of the diesel F150 in the 2018 model.

It'll be another interesting comparison as specs and performance impressions make their way into the media. Both variants also use the same 10-speed tranny. How appropriate, they have an Airstream in tow

Attachment 309537

Power numbers:
F150 Diesel - 3.0L Powerstroke V6: 250hp @3250rpm, 440tq @1750.
F150 Gas - 3.5L Ecoboost V6: 375hp @5000rpm, 470tq @3500.

MPG 4x4 ratings:
Diesel - 20 / 25 / 22 combined. 26 gallon tank
Gas - 17 / 22 / 19 combined. Option 36 gallon tank

Capacities:
Diesel max tow - 11,400lbs
Gas max tow - 13,200lbs

Diesel XL max payload: 2020 lbs
Diesel King Ranch 4x4 max payload: 1378 lbs
Gas V8 XL max payload: 3270 lbs
Gas Ecoboost Platinum 4x4: 2030 lbs

No driving impressions yet from the media as that'll come out in a few days.

At a glance, it's obvious the gassers outclass the diesel in sheer capacities and power. Both power and torque in case of the ecoboost.

The diesel is postured as the efficiency option. If power and capacities are priorities, the gasser varients are going to be the ticket. Hopefully the diesel delivers on the towing experience for those that want it, because yet again, the diesel is not the one that will be winning races to the top of the hill. No mention of a diesel brake option yet.

It will sell well anyway, to people who want a Diesel engine.
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Old 04-26-2018, 04:20 AM   #4
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I would have expected better fuel mileage from the diesel.
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Old 04-26-2018, 05:01 AM   #5
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Ford has clearly taken the economy route with the F150 diesel. It’ll be interesting to see if Chevy’s 1500 takes the same route. Their 3-liter in-line six hasn’t reported HP/torque figures yet (unless someone else has seen them).
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Old 04-26-2018, 06:12 AM   #6
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Given the origin of the engine (a European delivery van) I would be surprised if it did have an available engine brake. Without this feature, and given the other drawbacks (up front cost premium and reduced capabilities as a tow vehicle) I would suspect that the diesel F-150 would be a poor choice over the 3.5 litre Ecoboost version as a tow vehicle for most Airstream owners.
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Old 04-26-2018, 08:02 AM   #7
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Originally Posted by KCCO View Post
I would have expected better fuel mileage from the diesel.
The diesel numbers quoted here are apparently for the 4WD version. If you buy 4WD it's not available with the 3.31 differential ratio that the 2WD has by default, which returns 30 MPG on the EPA Highway cycle.
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Old 04-26-2018, 08:10 AM   #8
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Quote:
Originally Posted by AnnArborBob View Post
Given the origin of the engine (a European delivery van) I would be surprised if it did have an available engine brake. Without this feature, and given the other drawbacks (up front cost premium and reduced capabilities as a tow vehicle) I would suspect that the diesel F-150 would be a poor choice over the 3.5 litre Ecoboost version as a tow vehicle for most Airstream owners.
The 3.0 Powerstroke V6 was developed for Land Rover, actually. The "delivery van" Transit's diesel is a 3.2-liter 5-cylinder that's lower output. Neither of them has an exhaust brake that I know of.
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Old 04-26-2018, 09:16 AM   #9
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Note that the diesel makes max torque at 1750 RPM. I like the fact that my engine is not screaming while climbing a hill.
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Old 04-26-2018, 09:22 AM   #10
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A light duty, one step above a car....
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Old 04-26-2018, 09:38 AM   #11
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Getting the gas in three weeks or less.
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Old 04-26-2018, 10:02 AM   #12
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There is also a term called duty cycle. Which is how long an power system can deliver rated power. They may not be the same. The power plants and transmissions have always had this reality as a factor when towing.
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Old 04-26-2018, 10:06 AM   #13
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Note that the diesel makes max torque at 1750 RPM. I like the fact that my engine is not screaming while climbing a hill.
I have a 2016 FC 25 which I tow with my 2016 Ford 150XL eco boost 3.5. In the past twenty months I have pulled my Airstream up the Kenosha Pass 2 x westbound, Monarch Pass 2 x west bound and 2 x eastbound, Wolf Creek Pass 1 x westbound and the infamous Durango to Ouray US Route 550 1 x north bound. The eco boost engine has never screamed while climbing any of these Colorado passes. And by the way, descending was no problem either.
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Old 04-26-2018, 10:06 AM   #14
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Somewhat premature, but I gather this will be another diesel power plant that's not the game changer everyone wants it to be.

This has played out similar for the Nissan Titan XD, Dodge Ecodiesel vs. Hemi, Chevy Colorado, etc., and now Ford.

Diesel is the choice for a specific niche of use cases, but in general is more romantic in one’s mind. That being economy, range, and high load drivability. For a jobber or one that really piles on the miles toting loads, it does play to its strengths and adds up to real savings. But it comes at cost, literal cost up front, likely more maintenance costs, and most importantly, significant tradeoff of other qualities. Namely performance, agility, and capacity. In this case, also range as the gas version has a larger tank option? We’ll see if Ford allows for an extended tank option for the diesel. It would be odd that it doesn’t, as one of diesels primary advantages is usually range.

Diesels fundamentally has some achilles heels that make it play out this way: weight and emissions. On a ½ ton platform, diesel engines (and hence their output) are bound by these two realities. ¾ and 1 ton platforms take the reins off and make these Achilles heels much less an issue, which is why diesels shine there. But gas has come a long way and is also formidable in that space for many users.
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