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Posted on 9/27/25 at 6:43 pm to Jimmyboy
Input your year make and model on this fuel economy website. You can also set how many miles you drive a year with your local gas prices. Reg/Mid/Premium
It's an easy way to compare different models MPG, cost of gas per year and range on a full tank.
fueleconomy.gov
It's an easy way to compare different models MPG, cost of gas per year and range on a full tank.
fueleconomy.gov
Posted on 9/27/25 at 6:45 pm to Jimmyboy
Depending on the auto manufacturer recommendations
I don’t mean to brag but only for example my Porsche in the past (cayenne, cayman and 911) all recommend 93 octane
My rubicon I’m not sure there is a recommendation
I don’t mean to brag but only for example my Porsche in the past (cayenne, cayman and 911) all recommend 93 octane
My rubicon I’m not sure there is a recommendation
Posted on 9/27/25 at 6:47 pm to moe1967
quote:
Red = gas and green = diesel.
Well he was wrong so your story is suspect…
White = Regular
Red = Premium
Yellow = Diesel
This post was edited on 9/27/25 at 6:48 pm
Posted on 9/27/25 at 6:55 pm to moe1967
quote:
Years ago (late 90s) my FIL was at a small grocery store that sold gas. They'd sell 87, 89. and 93 octane gas. And Diesel. At the time he was there a supply truck was there dumping gas into the fill hole. Being the talkative guy my FIL was he started talking to the guy dumping the gas. Thats when he noticed that there were only 2 fill holes. Red = gas and green = diesel. I'll let you figure the rest out.
Years ago on a Caribbean island , I saw different trucks picking up trash and others picking up debris and old appliances. Thought they were recycling—nope, they just backed up to a rocky coral cliff and dumped it all into the ocean.
Posted on 9/27/25 at 7:07 pm to Jimmyboy
I think someone here a long time ago posted a link to a guy’s report on what vehicles need premium
Maybe try to google that for some information
Maybe try to google that for some information
Posted on 9/27/25 at 7:08 pm to moe1967
He was looking at the wrong holes.
That's what she said.
That's what she said.
Posted on 9/27/25 at 7:09 pm to Jimmyboy
quote:
premium but someone told me it’s the same as regular
It's the same, just different octane. Most modern cars can adjust to the lower octane with timing. They sense detonation differences.
You will likely get lower power and mileage running 87 in a 93 required engine. Damage, eh, depends on what you believe.
The same truck showing up to deliver gas can deliver diesel or any/all grades of gasoline. So someone watching where they deliver probably doesn't realize shite unless they know the station.
Posted on 9/27/25 at 7:12 pm to fightin tigers
Ok so the car’s performance is still better with the premium vs regular. Thanks
Posted on 9/27/25 at 7:18 pm to Jimmyboy
Better for what?
Premium has higher octane. Is that better?
Only if you car has high compression AND it was designed and programmed to use it.
Some premium brands have more or better additives that help clean your induction system. You know what that is right?
Some believe you will get better mileage on premium than regular even if your vehicle manufacturer recommends regular. Math doesn’t prove this out.
Premium has higher octane. Is that better?
Only if you car has high compression AND it was designed and programmed to use it.
Some premium brands have more or better additives that help clean your induction system. You know what that is right?
Some believe you will get better mileage on premium than regular even if your vehicle manufacturer recommends regular. Math doesn’t prove this out.
Posted on 9/27/25 at 7:22 pm to VooDude
quote:
Premium has electrolytes
The OT has a 80%+ rate of perfect first response going over its history. It's uncanny.
Posted on 9/27/25 at 7:24 pm to Zakatak
quote:
Well he was wrong so your story is suspect…
White = Regular
Red = Premium
Yellow = Diesel
The colors are irrelevant. The fact that there were only 2 fill holes ( one for gas. And one for diesel) should tell you everything you need to know.
There should always be at least 3 fill holes.
Diesel fill hole
Regular gas fill hole
Premium gas fill hole.
Mid grade gas is a combo of regular and premium gas mixed together.
BTW, the gas selling at this store was mysteriously shut down about a month later until , you guessed it, there were 2 brand new pumps that sold only 87 octane and diesel.
Posted on 9/27/25 at 7:25 pm to Jimmyboy
quote:
Ok so the car’s performance is still better with the premium vs regular. Thanks
Performance and mileage will be better. How much, not sure.
Longterm, things like improper detonation and carbon buildup from incomplete combustion will cost you far more than the upgrade in octane.
Posted on 9/27/25 at 7:26 pm to moe1967
quote:
The fact that there were only 2 fill holes ( one for gas. And one for diesel) should tell you everything you need to know.
Assuming the diesel tank is near the gasoline tank.
Your story does seem unlikely because the state inspector, pump installer, and anyone with the store would have to be in on the con. Unless the owner bought and personally installed the pumps and then bribed the state inspector every year.
This post was edited on 9/27/25 at 7:32 pm
Posted on 9/27/25 at 7:33 pm to Jimmyboy
The same additives that are in premium is in regular. You use premium if you need it.
It’s much better to use a good top tier regular fuel (Exxon, Shell, etc) than premium discount fuel (Walmart etc) if you vehicles only require regular.
I use premium in my ecoboost f150 though. I always run premium in turbo vehicles. It only calls for regular, but the computer detunes the engine for regular. I actually get notacable better mileage on premium on the ecoboost. But if it was the 5.0.. it wouldn’t matter.
It’s much better to use a good top tier regular fuel (Exxon, Shell, etc) than premium discount fuel (Walmart etc) if you vehicles only require regular.
I use premium in my ecoboost f150 though. I always run premium in turbo vehicles. It only calls for regular, but the computer detunes the engine for regular. I actually get notacable better mileage on premium on the ecoboost. But if it was the 5.0.. it wouldn’t matter.
This post was edited on 9/27/25 at 7:36 pm
Posted on 9/27/25 at 7:37 pm to moe1967
quote:
Years ago (late 90s) my FIL was at a small grocery store that sold gas. They'd sell 87, 89. and 93 octane gas. And Diesel. At the time he was there a supply truck was there dumping gas into the fill hole. Being the talkative guy my FIL was he started talking to the guy dumping the gas. Thats when he noticed that there were only 2 fill holes. Red = gas and green = diesel.
I'll let you figure the rest out.
Nobody believe this because it is bullshite. If a station sells more than 1 grade of gas they will have 2 gas tanks (maybe more but that is generally limited to one brand). One tank has the highest octane they sell (usually 91 or 93), and one has the lowest (usually 87, unless it is in high-altitude states like CO and WY, where they have 85 left over from carburated days). And midgrades are made by proper mixing of the two. This has been highly governmentally regulated ain't nobody selling 93 and 87 out of the same tank... at least for long.
As has been mentioned higher octane that necessary for you car is a waste of money. Except in rare instances, the detergent package is the same. Some cars will simply adjust the timing to use a lower octane fuel but high strng NA or F! engines will sometimes go into limp mode when filled with lower octane fuel. If you think you car "runs" better with higher octane than required then you have other issues but it is very rare (plecebo) in modern cars which are highly computer controlled.
Posted on 9/27/25 at 7:52 pm to CleverUserName
Yep.
Ford states that the ecoboost engines will have better performance with premium, but it’s not required.
Ford states that the ecoboost engines will have better performance with premium, but it’s not required.
Posted on 9/27/25 at 7:54 pm to Lucky McTuesday
quote:
Find a gas station that sells ethanol free gasoline.
This is a must for small engines (lawn mowers etc.)
Posted on 9/27/25 at 8:36 pm to weagle1999
quote:
What octane does your vehicle require?
They live among us and breath the same air as we do but, they are still DAS.
Posted on 9/27/25 at 9:02 pm to Jimmyboy
Premium is good but if you want peak performance everyone knows you go with diesel.
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