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What fuel for 5.7

I judge the world based on what's in my backyard.

... And the boiling point of water is 201.1 degrees Fahrenheit (94 C).

Right. Notice how you used the actual number (201.1), not a meaningless label like "very hot", which has different meaning to different people? That's because the number 201.1 is the same everywhere. Yes, boiling point (and octane requirements) change depending on elevation, but what is changing is the required temperature/octane, not the label.
 
Someone is missing the forest for the trees.

You're incredibly stubborn. Instead of just admitting that a descriptive label like "plus" or "regular" or "supreme" or "bronze" are useless, and that they change depending on the brand of gas, and just using the real numbers for octane which are equal across all brands; you've posted about 15 times now all trying to suggest you're not as stubborn as you really are.

Some people just don't know how to say: "I was wrong". Grow up.
 
If you want to tow a heavy trailer through Death Valley in July, use 85 octane and have fun. After all, 85 is 85 everywhere.

This thread was meant to be informational and educational. When you get your truck, put whatever you want in it. Nobody is telling anybody what to do....other than to "grow up".
 
If you want to tow a heavy trailer through Death Valley in July, use 85 octane and have fun. After all, 85 is 85 everywhere.

This thread was meant to be informational and educational. When you get your truck, put whatever you want in it. Nobody is telling anybody what to do....other than to "grow up".

You are one dense dude, how can you be so thick?

85 octane = 85 octane, regardless of which station you fill up at
85 octane = 85 octane, regardless of your location on earth
85 octane = 85 octane, regardless of your elevation above sea level
"plus" is not = "plus" wherever you go on earth; some stations don't even have a level called "plus".


So you're mixing two different points. First point is that when you're 10000 ft above sea level, you can run 85 octane where you would normally run 87 octane at sea level. This is correct. We all know and agree that different elevations and engines require different octane gas.

Where you are arguing incorrectly, is with the octane labels/description. Your original post said (I'm parapharsing here) "please include the label like "plus" or "regular" as that is more informative than 85/87". This point is the point where you are completely wrong, and refuse to admit it.

I've posted this like 10 times now, and each time you post another BS comment which completely ignores what I've just said over and over.
 
Some of you may think I'm somehow "stupid", but I'm under the impression that some of you are being intentionally obtuse.

If someone reads my post and concludes "This guy says 87 works great in his truck" without understanding the context, he may run into issues. Engine damaging issues. The manual states "89 Octane or Plus". You seem to act like that reference to "Plus" doesn't exist, is useless, or is mis-informational. It may not mean anything to you up in Canada, but it's relevant for many of us in the states.

This has been discussed in numerous threads regarding fuels in this forum, including links to video explaining the rationale about blends for specific regions. If your vehicle requires the top octane level available in your region, it will likely require the top octane available in other parts of the world. The same goes for mid/plus or regular options.
 
The manual states "89 Octane or Plus".

What you stupidly refuse to accept, is that many gas stations don't have "plus". It's not on the pump. It doesn't exist. They don't have "plus". It's not an option. It was never an option.

For the stations that might have "plus", it doesn't necessarily refer to the octane rating you think it does.

"Plus", is therefore meaningless to any discussion. The only relevant and useful information, is "85", or "87", or "93" etc. Because in every gas station in the world, 87 octane ALWAYS, without fail, equals the same octane level.

End of story.
 
What you stupidly refuse to accept, is that many gas stations don't have "plus". It's not on the pump. It doesn't exist. They don't have "plus". It's not an option. It was never an option.

For the stations that might have "plus", it doesn't necessarily refer to the octane rating you think it does.

"Plus", is therefore meaningless to any discussion. The only relevant and useful information, is "85", or "87", or "93" etc. Because in every gas station in the world, 87 octane ALWAYS, without fail, equals the same octane level.

End of story.
If it's "meaningless", 'non-existant', "never an option", then why is it in the manual? That information is actually useful where I live. The manufacturer recommends "89" or "Plus". 89 is not an option, but "Plus" is (and is labeled on the pump), which equates to 87 octane in my area. It's the mid-grade. Not the "Regular" or "Super/Supreme/Premium", the option in-between.

I don't understand how you seemingly believe that your perception or experience is the be-all end-all and there couldn't possibly be another answer.

(not my personal photos)
160111_em_gas.jpg

MGT-top-1029_b.jpg

o.jpg
 
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If it's "meaningless", 'non-existant', "never an option", then why is it in the manual? That information is actually useful where I live. The manufacturer recommends "89" or "Plus". 89 is not an option, but "Plus" is (and is labeled on the pump), which equates to 87 octane in my area. It's the mid-grade. Not the "Regular" or "Super/Supreme/Premium", the option in-between.

I don't understand how you seemingly believe that your perception or experience is the be-all end-all and there couldn't possibly be another answer.

(not my personal photos)

Because the manual is just as stupid? Where do you see "plus" here? If all you know is "plus", and not the actual octane rating, which option do you pick?

o.jpg





gas_pump_00897421_640.jpg




Webp.net-compress-image-1.jpg
 
I pick the one in the middle. It's easy. It's even easier when the octane number matches.

Perhaps the manual was written to address multiple situations and not a myopic singular view of the world? Maybe the writer of the manual, the manufacturer, isn't "stupid".

Are you sure you want to buy a truck from a stupid manufacturer writing stupid manuals that has some stupid owners?
 
I pick the one in the middle. It's easy. It's even easier when the octane number matches.

Perhaps the manual was written to address multiple situations and not a myopic singular view of the world?

Or perhaps the manual is just wrong and telling you useless information? Shocker, I know. Never happened before!

And it's YOUR view that is singular and myopic; you assume "plus" is available everywhere and that it refers to the same octane rating. I'm TELLING you, it doesn't.
 
I never said that "Plus" is equivalent to an octane rating. I should know, since it's 87 octane here. What I did say is that you should follow the grade of fuel wherever you are. The regional blends may have different octane numbers, but if you stick to the similar recommended fuel grade, you shouldn't have any performance issues.
 
This is from Colorado. Note how the "mid grade" equals 87 octane. So now in addition to saying "plus" in your discussions, you need to specify whether that "plus" was in CO (high above sea level) or in Texas/wherever.

Obviously it's far easier and more accurate to just say "85" or "87". But I suspect you admitting you're wrong is not something you're accustomed to doing so I'm just going to drop this and you continue to be your stuborn little self.
colorado-gas-prices-pump-regular-450w-10287004.jpg
 
You've totally misrepresented my original statement and back-ended into my original statement that discussing octane numbers outside of the environmental context is useless. Congratulations.

ETA: Many folks don't make their locations available, so this makes the relationship between the octane number and the poster's location even more difficult.
 
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You 2 arguing about labels and descriptions have made my day.
Neither one of you is wrong. Since I'm active duty, I've been able to travel all over and you'd be surprised at what the gas stations have labeled and for what.

"Plus" is a thing, so is 89. If you don't know what mid-grade fuel is by the time you're of driving age in your local, you may not want to drive. I can look at any pump and make an informed decision on what each gas is. Doesn't matter if it's Silver, Plus or 89. Everyone has labels for a reason. The manual has "plus" listed because "plus" being labeled at a gas station over simply saying 87, 89, 93 on the big sign is a thing and they accounted for it.

To be fair. I have NEVER seen "Plus" listed as anything other than 89 grade, but that also depends on the vendor of the gas (Exon for example) typically when you see "Plus" from one company, it's the same throughout the country in the United States at least.

Using numbers or labels may be a little easier to navigate to you than others and vice versa, and that is why usually 'both' are on the pumps and FCA decided to accommodate it in the manual because it is listed like that universally to most of their market. If they wanted to make everyone happy, they would also list Bronze/Silver since that's something I see at select gas stations.

Also, most likely we are truck/vehicle enthusiasts or we wouldn't be here, right? I have 3 older sisters. Growing up, we always had to tell them to get "Plus or Premium" and never used the actual octane numbers because they had no idea what that meant, hell, I suspect a lot of people have no idea what they actually mean and go off the label. The labels do coincide with the regions you live in.

Again, neither one of you are wrong, you guys blew this way out of proportion for no reason at all. Also to be fair, I also remember growing up and us having to put premium in our vehicle, my dad would just say "Get premium" and some gas stations had it, some didn't. Some did have "Premium" listed and the octane was different.

But that is all they offered. I want to say that these types of instances are very far and few in between though.
 
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I was using 87 and my mileage was horrible. I switched to 93 because I get gas at Costco and they only have 87 or 93. 89 elsewhere around here is as much as Costco 93. After the first tank I noticed about a 2 MPG increase in mileage. 93 is better in the summer too when engines tend to knock more.
 
manuals are generic and many times stupid or will point out the "obvious" because many users are stupid. If i told you I only pump plus fuel to you it would mean 89 octane but to someone else, 87 or even 91 so calling fuel anything other then its # is irrelevant to many in other states or provinces. (perhaps useful to those within your community and those using the same brand of gas)
BTW I use Plus supreme clean unleaded : )
 
You 2 arguing about labels and descriptions have made my day.
Neither one of you is wrong. Since I'm active duty, I've been able to travel all over and you'd be surprised at what the gas stations have labeled and for what.

"Plus" is a thing, so is 89. If you don't know what mid-grade fuel is by the time you're of driving age in your local, you may not want to drive. I can look at any pump and make an informed decision on what each gas is. Doesn't matter if it's Silver, Plus or 89. Everyone has labels for a reason. The manual has "plus" listed because "plus" being labeled at a gas station over simply saying 87, 89, 93 on the big sign is a thing and they accounted for it.

To be fair. I have NEVER seen "Plus" listed as anything other than 89 grade, but that also depends on the vendor of the gas (Exon for example) typically when you see "Plus" from one company, it's the same throughout the country in the United States at least.

Using numbers or labels may be a little easier to navigate to you than others and vice versa, and that is why usually 'both' are on the pumps and FCA decided to accommodate it in the manual because it is listed like that universally to most of their market. If they wanted to make everyone happy, they would also list Bronze/Silver since that's something I see at select gas stations.

Also, most likely we are truck/vehicle enthusiasts or we wouldn't be here, right? I have 3 older sisters. Growing up, we always had to tell them to get "Plus or Premium" and never used the actual octane numbers because they had no idea what that meant, hell, I suspect a lot of people have no idea what they actually mean and go off the label. The labels do coincide with the regions you live in.

Again, neither one of you are wrong, you guys blew this way out of proportion for no reason at all. Also to be fair, I also remember growing up and us having to put premium in our vehicle, my dad would just say "Get premium" and some gas stations had it, some didn't. Some did have "Premium" listed and the octane was different.

But that is all they offered. I want to say that these types of instances are very far and few in between though.

I have members in the family who are of the fairer sex, and know nothing about gas either; doesn't stop me from telling them "pick the one that says 87". Because as I've stated 20 times now, even with pictures (you guys must be blind), "plus" doesn't exist on the vast majority of pumps in my area. Each gas station brand in my area pretty much uses their own labels for 87 octane, which is why it's useless to pick one, and why it's far easier to memorize "87" because that never changes from station to station.

Therefore; the OP's original request to include the descriptive label with the octane number, "because that is more helpful", is incorrect. It's less helpful, and may even be a hindrance because nobody knows what the heck "plus" means; it could be different for different forum members, depending on the area they live in. So now instead of just a helpful number like 87, you want to drag the discussion into the weeds where you now need to include a reference to what "plus" means?

Yeah this discussion has gone on way too long and has reached the point of pettiness; my bad. I just can't believe some of you guys are stumbling over this. Or maybe I just suck at explaining things.
 

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