Fuel Type??

[sollymate]

I read over the manual and it said it's built to run on 87 but performs best on 91 or higher. Since I only had my Maverick for a week before I had the deer accident, I only put fuel in it twice, and I used 93 fuel. I was just curious what other Mav owners were putting in their trucks because filling up with 93 can get real expensive real quick, despite the great fuel economy of the truck. I also may sound dumb for this, but is it bad to switch up the fuel you are using for different situations. For example, my family is going on a ski trip in December and I am hoping I'll have the truck back by then. Is it okay to use 87 until the trip and 93 while on the trip? These are probably things I should know, but I've never purchased a new vehicle before this, and now I am trying to be much more thorough.

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[Carlitos_92]

For normal use, 87 is fine. I use 87 when I am doing long trips where I will just burn multiple tanks of gas on the interstate and anything more would be a waste of money.

If you were towing or asking a lot of the Ecoboost engine, higher octane will allow it to make more power before it starts to adjust due to preignition aka "knock." The takeaway is that the engine knows when it is detonating and will protect itself. You will likely not notice one way or the other.

There is no issue with using 93 vs. 91 if that is what is available. That is what I use most of the time around town because that's what Costco has.

Mixing and matching octane ratings is no issue, either. Technically the "mid grade" 89-ish octane fuels are mixed at the station between tanks of regular and premium.

 

[oysterville]

This is what I use.

 

[Tbone289]

This is the plan I follow. YMMV

Highway trips:

• no towing: 87 octane
• towing: 93 octane

In-town driving:

• Winter: 87 octane
• Summer: 89 octane
• Summer with AC use (85+ degree ambient) or high load (towing) conditions: 93 octane

 

[Glen Baker LLC]

Depending on the state. How high in the mountains you are. You may not be able to find higher octane fuel.

 

[G5892]

I bought this truck to be cheap. And I don’t tow. So 87 ‘til it dies

 

[vinnymac]

I read over the manual and it said it's built to run on 87 but performs best on 91 or higher. Since I only had my Maverick for a week before I had the deer accident, I only put fuel in it twice, and I used 93 fuel. I was just curious what other Mav owners were putting in their trucks because filling up with 93 can get real expensive real quick, despite the great fuel economy of the truck. I also may sound dumb for this, but is it bad to switch up the fuel you are using for different situations. For example, my family is going on a ski trip in December and I am hoping I'll have the truck back by then. Is it okay to use 87 until the trip and 93 while on the trip? These are probably things I should know, but I've never purchased a new vehicle before this, and now I am trying to be much more thorough.

I run 93 octane since i emptied out the little bit the factory put in.i have a mild tune for a little more pep in its step

 

[crgator]

I've run 87 since I got my hybrid (Apr 2023), and it runs like a charm. And I live in Central Florida, so it's hot as Hades.

 

[710-oil-614]

93 top tier only for me.

You do not get the specified power ratings (hp/torque) unless using 91 or higher. I also find the EB singer runs a little smoother on the 93.

That said performance gains can’t be felt by the old butt dyno and I’m likely wasting money but that’s me.

 

[colinl]

when switching from 87 to 91 or 93, make sure to get the tank as low as possible. it can take a full tank or more to fully learn the higher octane.

if you have a scan gauge or are logging with forscan, you can actually see the Knock Octane Modifier. at 3 bars on the coolant temp gauge it starts measuring. it will go to 1.000 if you have good quality fuel. I've personally seen as low as .600 on 91, and I never use 87.

you really only benefit from high octane under heavy load or with 75-100% throttle input. if you baby the throttle everywhere, trying to get best mpg or just in no hurry to get anywhere, the engine never makes enough boost to even benefit from premium fuel unless you climb a steep hill or drive in the mountains.

 

[710-oil-614]

you really only benefit from high octane under heavy load or with 75-100% throttle input.

I do disagree that you only see benefit under 75% throttle or more.

That is not how fuel mapping works.

 

[colinl]

I do disagree that you only see benefit under 75% throttle or more.

That is not how fuel mapping works.

partially true. you do get some benefit from advanced timing.

but it's much more significant under heavy throttle. at least 50%.

 

[Bob The Builder]

I only drive 4K a year, so its 91 E-Free for me.

FWIW I see the bennies of this fuel even with light throttle. Many threads talk about the benefits of 91 octane to negate the so called "chugging" effect some of us have experienced and some do not at low RPM.

 

[710-oil-614]

partially true. you do get some benefit from advanced timing.

but it's much more significant under heavy throttle. at least 50%.

it’s not partially true it is completely true. What you’re saying is logical - the heavier the load (full throttle input) the greater the gains you’ll see using 93 but to say there is no benefit at less than 50% throttle is entirely incorrect.

 

[Montana]

91 is the best I can get. It's what the EB gets. Love it or hate it, EB's like the higher octane.

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