Premium Fuel

[five9dak]

I run 89 in my 3.6. It idles like crap on 87. The Compression ratio on this motor is REALLY high for piss gas. This has been argued a lot on this forum.

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[Stonerider]

I've found I get better gas mileage when I run non-ethanol premium gas. I usually get about 2+ more miles per gallon versus using the 87 with 10 percent ethanol.

 

[1BadManVan]

91 octane here on our 2019 3.6. Don't care how much they try to tune it out of the motor, the compression is too high for regular and that was proven by a known tuner on here that showed the difference on the factory tune running the higher octane

 

[Ghettomedic]

In my opinion and this is only my opinion so take it with a grain of salt. Manufacturers know their vehicles will do better with higher octane fuel but they recommend regular first it’s appealing because regular gas is cheaper and secondly it will be okay for as long as the vehicle has warrant. vehicles these days are more disposable then ever.

 

[Willys41]

Higher octane will help with detonation . What I did was install a oil catch and that made a big difference in detonation
Much cleaner intake air
You will be surprised on how much oil is removed from the intake air
I use the UPR catch can

 

[TheRaven]

I usually waste $5 a week on far dumber shit (15k-mile national annual average / 20MPG = 750GAL x $0.30 price increase from 87 to 89 / 52 weeks = $4.33/wk) ?‍

I actively hate you people that can get premium for only $0.30 more. I haven't found a gas station in the last 5 years that offers premium for less than $0.60 more than regular. Recently it's been $0.70 at the crap stations and a dollar or more at the good ones. If I could get it that cheap, i'd run it in everything.

To add another data point, i've tested the premium vs regular difference extensively in my 2021 JLU80 and found zero difference. No more power, no more MPGs and no audible knock on either grade. Same as all my other vehicles (that don't require it).

 

[AFD]

I actively hate you people that can get premium for only $0.30 more. I haven't found a gas station in the last 5 years that offers premium for less than $0.60 more than regular. Recently it's been $0.70 at the crap stations and a dollar or more at the good ones. If I could get it that cheap, i'd run it in everything.

To add another data point, i've tested the premium vs regular difference extensively in my 2021 JLU80 and found zero difference. No more power, no more MPGs and no audible knock on either grade. Same as all my other vehicles (that don't require it).

Just to clarify, my example was only showing the difference from 87 to 89 mid-grade and not 91+ premium. So technically, I'm not getting "premium" for 30¢ extra, just mid-grade.

I'm on the west coast of our state, so really not too far away, same stupid gas tax and our prices are pretty close otherwise. This weekend, our 87 was $3.99 and 93 was $4.74 with 89 and 91 spaced out in between. Sheetz is now showing $3.89 for 87, $4.19 for 89 and $4.49 for 91. Some of the stations in Reading seem close, but yeah, you have a giant 44¢ jump to midgrade at Wawa, even though your 87 and 91 is actually a little cheaper than ours.

I always buy at Sunoco and no one ever tracks their 89 and 91 prices, but our Sheetz pricing has been really weird this year. Several times this summer I've had people tell me they had all of their grades priced exactly the same as the cheap shit (not even a penny more). The other stations then need to fudge their mid-grades to be lower because of that.

And sure, maybe my JL doesn't need premium gas. I just like paying my weekly tithes to the oil cartels, since they're now a struggling industry that desperately needs our money to stave off big electric ?

 

[TheRaven]

Just to clarify, my example was only showing the difference from 87 to 89 mid-grade and not 91+ premium. So technically, I'm not getting "premium" for 30¢ extra, just mid-grade.

I'm on the west coast of our state, so really not too far away, same stupid gas tax and our prices are pretty close otherwise. This weekend, our 87 was $3.99 and 93 was $4.74 with 89 and 91 spaced out in between. Sheetz is now showing $3.89 for 87, $4.19 for 89 and $4.49 for 91. Some of the stations in Reading seem close, but yeah, you have a giant 44¢ jump to midgrade at Wawa, even though your 87 and 91 is actually a little cheaper than ours.

I always buy at Sunoco and no one ever tracks their 89 and 91 prices, but our Sheetz pricing has been really weird this year. Several times this summer I've had people tell me they had all of their grades priced exactly the same as the cheap shit (not even a penny more). The other stations then need to fudge their mid-grades to be lower because of that.

And sure, maybe my JL doesn't need premium gas. I just like paying my weekly tithes to the oil cartels, since they're now a struggling industry that desperately needs our money to stave off big electric ?

Yes that makes more sense. Your prices are pretty close to what i'm seeing here then. Sheetz does lots of pricing promotions, around here at least - over the American holidays they always have the "Unleaded 88" (their name for E15) for really cheap. It was $2.99 last week, and actually $1.77 over the 4th. Actually now that I think of it, I believe Sheetz had all grades at $1.77 over the 4th cause the lines were causing traffic problems. There is one Sheetz location within reasonable distance, for me, that always has 88 at $2.99, so I will often run a couple tanks of it mixed in with the regular 87. It's a waste of time on a small car but on the 20gal tank in the JLU or the 26gal in my Silverado, it makes a big difference. Unfortunately, aside from that July 4th Sheetz deal, no one ever runs promotions on premium fuel. It remains at $4.49+ pretty much all the time.

 

[AFD]

Yes that makes more sense. Your prices are pretty close to what i'm seeing here then. Sheetz does lots of pricing promotions, around here at least - over the American holidays they always have the "Unleaded 88" (their name for E15) for really cheap. It was $2.99 last week, and actually $1.77 over the 4th. Actually now that I think of it, I believe Sheetz had all grades at $1.77 over the 4th cause the lines were causing traffic problems. There is one Sheetz location within reasonable distance, for me, that always has 88 at $2.99, so I will often run a couple tanks of it mixed in with the regular 87. It's a waste of time on a small car but on the 20gal tank in the JLU or the 26gal in my Silverado, it makes a big difference. Unfortunately, aside from that July 4th Sheetz deal, no one ever runs promotions on premium fuel. It remains at $4.49+ pretty much all the time.

Yeah, I think they had regular 87 (or possibly all regular unleaded grades) for $1.776 on the 4th of July. My mom spent a few hours driving all over town and waiting in long lines trying to find a station that wasn't sold out that day. Probably still ended up saving money, but how much is your time worth? Something fun to do on a holiday I guess. ?

My dad always runs Sheetz' 87 in his JKU without any problems, but since their gas isn't a Top Tier brand, I refuse to go there since Sunoco's pricing is usually within a nickel (not including the completely random days they sell their mid-grade and premium at 87 prices).

Premium pricing aside, I value the consistent refinery sources and higher levels of detergent in Top Tiers more than any increase in octane. Just feel more assured running Sunoco 87 or 89 than running Sheetz 91.

Iirc from my days working at a Sunoco, we only had 2 tanks anyway. One for 87 and another for 93, and everything else was blended at the pumps for the grades in between. I know Weights & Measures would check and approve the calibration of how much fuel they were pumping, but really not sure if they also checked the mid-grade octane levels for accuracy.

 

[cthomas31]

I switched from 87 to 93 and I’m getting 20mpg in my 3.6. Was getting around 15mpg with 87. Not sure if it’s because I’m monitoring it more or not but I plan to go back to 87 after a couple tanks and see if it really makes a difference.

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