Not very happy right now.

[chrisk2361]

NO update from the dealer. Still waiting for ford engineer to get back to them. As for the gas debate. I have no problem putting 91 gas in the tank. I was just following the window sticker. Im not an expert.I dont drive hard. I dont consider passing someone on the road by pressing the gas pedal a little more as driving hard. I will go with 91 from now on to eliminate any poor gas issue.

 

[xrocket21]

NO update from the dealer. Still waiting for ford engineer to get back to them. As for the gas debate. I have no problem putting 91 gas in the tank. I was just following the window sticker. Im not an expert.I dont drive hard. I dont consider passing someone on the road by pressing the gas pedal a little more as driving hard. I will go with 91 from now on to eliminate any poor gas issue.

Sorry for your thread getting derailed! Good luck and keep us updated.

 

[Jayrod]

Were wasting our breath here man. What are simple concepts in the automotive world, regardless of vehicle, dont apply to the almighty raptor according to some people here.

No one is wasting their breathe you are talking about FI cars with tunes and 1000 HP. I'm talking about what Ford says the truck is based on and should run on daily. We all know 91+ is better with a tuned vehicle. You can keep beating on the high octane drum but it doesn't change that this OP should be able to run his vehicle with 87 with 0 issues according to Ford.


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[smurfslayer]

Were wasting our breath here man. What are simple concepts in the automotive world, regardless of vehicle, dont apply to the almighty raptor according to some people here.

Not at all what I said, implied or asked for. I’m only asking for verifiable proof of poor gas contributing to a problem, or causing a problem in the 2017. Not just subjective assessments of ‘it feels faster, runs better and just because’.

Until we actually have some verifiable proof, we’re sending OP down a rabbit hole on nothing more than conjecture. If there’s more than that, let’s see some actual evidence- like a dealer R.O. indicating a 2017 in stock configuration that won’t tolerate 87 octane or don’t run under 91 octane or similar.

 

[Truckzor]

Other than subjective “my truck runs better on nn octane gas” can you point to a first person, verified account of octane being the cause of poor running in the 2017 Rap or contributing to an actual problem needing repair?

It’s not a baiting question, Rap is the first vehicle I’ve seen an actual r requirement to run semi-synthetic or full synthetic oil - no dino oil meets the manual requirements. So, if there is a case of the 3.5tt being initially designed to run on 93, and then having the knock sensors dialing back power you would have a point. If however they set it up to run on 87 - which isn’t the cheapest, lowest available octane in all areas of the USA, there’s 85 & 86 available in a lot of other regions of the USA, if they set it up to run on 87, and everything is working as designed then you’ll gain practically nothing by way of power from running higher octane without a retune You’ll get more resistance to detonation, which is definitely a plus for using the truck as designed, off roading, high altitude, hot weather, a combination or towing, etc.

I've been trying to avoid having having an argument on semantics with the peanut gallery (not talking about you) but for me it's all right there in print. The manual absolutely does not say it was designed to run on 87. It says it was designed to run on regular unleaded with a MINIMUM of 87 octane and that for best performance 91 or better is recommended. Simply put, Ford recommends 91 or better. If you're running 87, you're not running the fuel Ford recommends. There's really no debate here.

Here's the text:

"Your vehicle is designed to operate on
regular unleaded gasoline with a minimum
pump (R+M)/2 octane rating of 87 or
regular unleaded gasoline blended with a
maximum of 85% ethanol (E85).

Some fuel stations, particularly those in
high altitude areas, offer fuels posted as
regular unleaded gasoline with an octane
rating below 87. We do not recommend
these fuels.

For best overall vehicle and engine
performance, premium fuel with an octane
rating of 91 or higher is recommended. The
performance gained by using premium fuel
is most noticeable in hot weather as well
as other conditions, for example when
towing a trailer. See Towing (page 257)."

Btw guys, I have a Gen 1, so I have no dog on this fight. I'm also not an ecoboost fan. So y'all can all run 87 and handicap your trucks as far as I'm concerned. I personally think running 87 in a high psi turbo motor isn't a good idea, though. Running 87 may not void your warranty (unless it pings too much and you fail to bring it in for the dealer to look at) but it definitely wasn't designed to run its best on 87. It's all right there in the text. Plain as day.

Btw, the Gen 1 manual stated the actual amount of horsepower lost by running shit fuel. My guess would be you can thank the marketing department for pulling that same info from the Gen 2 manual.

 

[dlbb]

if i am misunderstanding feel free to correct me.

it is my understanding that the 3.5l ecoboost has the ability to sense and adjust for the octane from 87-91 from the factory. it will advance or retard the timing as needed for various octane. this is no different then any other motor ford has produced for the trucks since 2009 from my understanding. only exception are the e85 capable. they can sense the e85.

seam legit or bullchit?

 

[smurfslayer]

I've been trying to avoid having having an argument on semantics with the peanut gallery (not talking about you) but for me it's all right there in print. The manual absolutely does not say it was designed to run on 87. It says it was designed to run on regular unleaded with a MINIMUM of 87 octane and that for best performance 91 or better is recommended. Simply put, Ford recommends 91 or better. If you're running 87, you're not running the fuel Ford recommends. There's really no debate here.

Here's the text:

"Your vehicle is designed to operate on
regular unleaded gasoline with a minimum
pump (R+M)/2 octane rating of 87 or
regular unleaded gasoline blended with a
maximum of 85% ethanol (E85).

Some fuel stations, particularly those in
high altitude areas, offer fuels posted as
regular unleaded gasoline with an octane
rating below 87. We do not recommend
these fuels.

For best overall vehicle and engine
performance, premium fuel with an octane
rating of 91 or higher is recommended. The
performance gained by using premium fuel
is most noticeable in hot weather as well
as other conditions, for example when
towing a trailer. See Towing (page 257)."

Btw guys, I have a Gen 1, so I have no dog on this fight. I'm also not an ecoboost fan. So y'all can all run 87 and handicap your trucks as far as I'm concerned. I personally think running 87 in a high psi turbo motor isn't a good idea, though. Running 87 may not void your warranty (unless it pings too much and you fail to bring it in for the dealer to look at) but it definitely wasn't designed to run its best on 87. It's all right there in the text. Plain as day.

Btw, the Gen 1 manual stated the actual amount of horsepower lost by running shit fuel. My guess would be you can thank the marketing department for pulling that same info from the Gen 2 manual.

I agree with you, and I’m sure that there’s at least one engineer involved in the powertrain development that is responsible for the text you bolded. My professional experience has permitted me to be involved in several similar statements.

The reason I asked for some verifiable, first hand evidence is that it’s almost like the octane rating is our go to boogeyman. also, thanks for putting in that bit about ignoring excessive pinging, that would clearly be abusing the truck and nobody should be blindly running the cheapest gas they can get and not paying attention to sound of persistent pinging or detonation.

 

[pjones]

Btw, the fuel from Ford when it rolls off the assembly line is...87.

Until yesterday, I have only used 87 in my riding mower, all my gas vehicles get the ****** 91 avail here. But after reading this thread, I decided to run fuel up with 87. I didn't die.

 

[dewalt]

I do not believe that the raptor is e85 rated. More disinformation here than at a democrat convention.

 

[MJslasherADMIN]

They will pay if it causes engine failure and I've been on this end in court and won. So let me help you understand words matter and if it says anywhere that the truck takes 87 for daily function and fails, it's their fault.

Your vehicle is designed to operate on regular unleaded gasoline with a minimum pump (R+M)/2 octane rating of 87.

For best overall vehicle and engine performance, premium fuel with an octane rating of 91 or higher is recommended. The performance gained by using premium fuel is most noticeable in hot weather as well as other conditions, for example when towing a trailer.

I win all day long in court with that paragraph.


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Correct. Boosted doesnt equal 93 octane. Its the strategy in the pcm and timing and spark advance that dictates minimum fuel. If the pcm is calibrated in a certain way it can self adjust for low and high quality fuel.

You can tune any boosted application to run on 86 octane, let alone 87, safely.


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