Sunoco 260GT 100 Octane Fuel

[Sarge101st]

2015 Sedan 5.0. Found a Sunoco station near me that has a pump with 260GT race fuel. $9 a gallon but I took the plunge and filled the tank. I didn't feel more power but noticed what felt like a slight improvement in engine idle and smoothness at speed. It also looks like fuel economy is improved but that would be expected. I don't think you'd shave much more than a tenth off your 0-60 time but if you find the fuel it may be worth a few gallons mixed with 93 for improved engine idle.

 

[EdP]

2015 Sedan 5.0. Found a Sunoco station near me that has a pump with 260GT race fuel. $9 a gallon but I took the plunge and filled the tank. I didn't feel more power but noticed what felt like a slight improvement in engine idle and smoothness at speed. It also looks like fuel economy is improved but that would be expected. I don't think you'd shave much more than a tenth off your 0-60 time but if you find the fuel it may be worth a few gallons mixed with 93 for improved engine idle.

Bee Ridge Road? In the same area 93 octane is about 2.85 so that is quite the premium. Thanks for the information but I think I'm going to pass at that price.

 

[Alfer]

Wow! Sorry OP, but sounds like a complete waste of $$$.

 

[Sarge101st]

Yep. Bee Ridge is correct and yes the premium price wasn't worth it. I felt like the guinea pig when I was doing it but screw it. I've always wanted to throw race fuel into my car just once in my life. I remember 20 years ago driving around the everglades in my '87 Grand National because I heard about a marina that was letting cars fuel up with race fuel that they were using in air boats. I drove all over the swamp area (before navigation or the internet for help,) but came up empty handed and ended up getting drunk at the Swamp Buggy Lounge! Don't waste your $$ on Sunoco 260GT!

 

[TurtleBoy]

It also looks like fuel economy is improved but that would be expected.

Using gas with a higher octane than what is recommended does not improve fuel economy.

 

[Sarge101st]

I'm assuming it's the efficiency version of a butt dyno but it looks as if I'm getting better mpg on average. I wouldn't doubt the placebo effect.

 

[Alfer]

I would worry that the extreme octane would possibly do more harm than good to the engine with prolonged use.

 

[Sarge101st]

Probably a good point as it could throw off engine timing and negatively impact cylinder wear. Wasn't planning on putting it in the tank more than once though. I think I'll be okay. Fingers crossed!

 

[Cali Gen]

Bee Ridge Road? In the same area 93 octane is about 2.85 so that is quite the premium. Thanks for the information but I think I'm going to pass at that price.

I get 91 Shell V-Power Nitro + $4.19/Gal AFTER 10c gold member discount

 

[Sarge101st]

Shell VPower is good fuel. Project Farm on Youtube did a test of the fuel against regular 87 octane gas and VPower did a good job of cleaning the engine. I don't recommend you putting anything north of 91/93 VPower in your vehicle after my experience of price vs. performance of the Sunoco 260GT 100 octane I put in mine.

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[Cali Gen]

Shell VPower is good fuel. Project Farm on Youtube did a test of the fuel against regular 87 octane gas and VPower did a good job of cleaning the engine. I don't recommend you putting anything north of 91/93 VPower in your vehicle after my experience of price vs. performance of the Sunoco 260GT 100 octane I put in mine.

And just a side not it's not a magic cleaning potion you cant throw in 1 or 2 tanks of premium gas and expect it to polish off the heads lol you need to continuously fill up with premium to receive the full potential of the cleaning agents you're paying extra for

 

[TurtleBoy]

Premium, as defined by higher octane, cleans no better than 87 octane gas. What makes the difference is the additives and Shell Vpower, like all other Top Tier fuels, generally have a better additive package than non-Top Tier fuels.

 

[Cali Gen]

Premium, as defined by higher octane, cleans no better than 87 octane gas. What makes the difference is the additives and Shell Vpower, like all other Top Tier fuels, generally have a better additive package than non-Top Tier fuels.

Disclaimer: When I say premium I refer only to shell v power nitro+ which is top tier

 

[carguy75]

2015 Sedan 5.0. Found a Sunoco station near me that has a pump with 260GT race fuel. $9 a gallon but I took the plunge and filled the tank. I didn't feel more power but noticed what felt like a slight improvement in engine idle and smoothness at speed. It also looks like fuel economy is improved but that would be expected. I don't think you'd shave much more than a tenth off your 0-60 time but if you find the fuel it may be worth a few gallons mixed with 93 for improved engine idle.

To be honest, I do not believe that the stock ecu will adjust the engine parameters enough to fully take advantage of the 100+ octane in the race fuel. The engine is probably not burning all the race fuel during combustion. You would need to have an engine tuner make a custom tune that will be more aggressive to take advantage of the extremely high octane I believe.

I used to run 76 performance+ 100+ octane pump gas when I lived in Hawaii on track days in my old 2001 Volvo T6 twin turbo I6 engine. Made the engine run strong however, it did not feel much faster than the pump 92 sold as premium based off the butt dyno. However, I did have a IPD tune, so the 100+octane fuel helped make power I believe since my time slips showed improvement by nearly 3/10th. I had to use a race helmet at the dragway on race fuel since my 1/4 mile time was under 14 seconds on race fuel with the IPD tune. 92 octane put my time over 14 seconds with the tune.

I use only Shell V-power 93 octane in my Genesis and my 5.0 engine runs buttery smooth at idle. You can not tell that it is running with the hood closed.

 

[Rodney Dangerfield]

Higher octane fuel is required for higher compression engines. Typically race car engines are very high compression, way higher than anything on the road. The octane needs to be higher in the higher compression engines to prevent pre-ignition or pinging. Too much of that will destroy your engine. With VVT systems you can use 85/87 octane and you won't notice any appreciable difference in horsepower or fuel economy. Save your $$ and fill up with the cheap stuff.

 

[CVODON]

Higher octane fuel is required for higher compression engines. Typically race car engines are very high compression, way higher than anything on the road. The octane needs to be higher in the higher compression engines to prevent pre-ignition or pinging. Too much of that will destroy your engine. With VVT systems you can use 85/87 octane and you won't notice any appreciable difference in horsepower or fuel economy. Save your $$ and fill up with the cheap stuff.

Totally disagree with your opinions on Variable Valve Timing (VVT) and octane but you are correct on compression but turbo motors have lower compression and need octane for cylinder control, Apparently you have no knowledge of that at all, We all have opinions but from someone who made fuel for a living, you are either just cheap or have no fuel (gas) octane vs refinement, additives blending knowledge. Please folks do your own research and don't just take random opinions as good info.

 

[Rodney Dangerfield]

Totally disagree with your opinions on Variable Valve Timing (VVT) and octane but you are correct on compression but turbo motors have lower compression and need octane for cylinder control, Apparently you have no knowledge of that at all, We all have opinions but from someone who made fuel for a living, you are either just cheap or have no fuel (gas) octane vs refinement, additives blending knowledge. Please folks do your own research and don't just take random opinions as good info.

It depends on the VVT, but for the first gen they can run on anything. I didn’t notice any difference in anything when I filled up with premium so I don’t waste the money. I don’t deal with turbos so no, I’m not familiar.

 

[Kraig Wilkinson]

To be honest, I do not believe that the stock ecu will adjust the engine parameters enough to fully take advantage of the 100+ octane in the race fuel. The engine is probably not burning all the race fuel during combustion. You would need to have an engine tuner make a custom tune that will be more aggressive to take advantage of the extremely high octane I believe.

I used to run 76 performance+ 100+ octane pump gas when I lived in Hawaii on track days in my old 2001 Volvo T6 twin turbo I6 engine. Made the engine run strong however, it did not feel much faster than the pump 92 sold as premium based off the butt dyno. However, I did have a IPD tune, so the 100+octane fuel helped make power I believe since my time slips showed improvement by nearly 3/10th. I had to use a race helmet at the dragway on race fuel since my 1/4 mile time was under 14 seconds on race fuel with the IPD tune. 92 octane put my time over 14 seconds with the tune.

I use only Shell V-power 93 octane in my Genesis and my 5.0 engine runs buttery smooth at idle. You can not tell that it is running with the hood closed.

These 5.0 engines have 11.5:1 compression ratio. That is actually kind of high. Back in the 80s andb90s they were like 8.5:1 . I am a totall believer that the higher octane helps theses 5.0 engines run better all the way around.

 

[Cali Gen]

It depends on the VVT, but for the first gen they can run on anything. I didn’t notice any difference in anything when I filled up with premium so I don’t waste the money. I don’t deal with turbos so no, I’m not familiar.

Uhh the health benefits for your engine from using premium is superior to regular lol.. continuously using top tier like shell v power nitro will extend the life of your engine and keep it very clean.. but you seem like the type of guy that'll just buy any brand gas for the cheapest price from any station.. sooo

 

[carguy75]

These 5.0 engines have 11.5:1 compression ratio. That is actually kind of high. Back in the 80s andb90s they were like 8.5:1 . I am a totall believer that the higher octane helps theses 5.0 engines run better all the way around.

I agree mostly. 11.5:1 compression engines or similar compression used to run only on high octane race fuel not pump gas. I was only giving my opinion that the stock ECU parameters would not allow the 5.0 TAU engine to run at it best while using 100+ octane unless Hyundai has some secret aggressive fuel trim maps for 100+ octane locked into the ECU, however I am sure that the engine may run strong with 100+ octane but not at its full potential.

Worst case is that the stock ECU does not adjust the timing enough to properly burn the 100+ octane fuel and actually cause the engine to lose power by running too rich due to unburnt fuel.

My bet is that the stock engine would run great with about a 95 octane blend(91or 93 mixed with 100 octane). However, this all speculative.