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Discussion Starter #1
I noticed this year there was a big push for a top-tier premium fuel "upgrade" among most gas stations Ive come across. My question here is what company provides the best overall premium? I have always used SA fuel(92 premium) and my cars have ran decent. But I have a tune coming up on my turbo-d and I am not going E-85 yet.(due to lateness in the year) I was leaning towards BP 93 premium. I have heard from a few that this fuel tends to be better than most. Have you guys heard or experienced anything similar or different? Or are these fuels damn near all the same at the premium level?
 

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I noticed this year there was a big push for a top-tier premium fuel "upgrade" among most gas stations Ive come across. My question here is what company provides the best overall premium? I have always used SA fuel(92 premium) and my cars have ran decent. But I have a tune coming up on my turbo-d and I am not going E-85 yet.(due to lateness in the year) I was leaning towards BP 93 premium. I have heard from a few that this fuel tends to be better than most. Have you guys heard or experienced anything similar or different? Or are these fuels damn near all the same at the premium level?
My .02

I would imagine that when it comes to pre-ignition and knock prevention for higher horsepower builds, octane would be octane.

87 < 91 < 93 < 94 < E85

I know here the HIGHEST octane level rated gas is from Sunoco and that is a 94 octane, I am not a fuel expert or anything but I know they might have certain additives which distinguish between them, but one would think Octane is Octane.

Personally there are no stations around here which provide E85, so I am going to be running with a water/methanol injection kit.
 

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You can still run "e85" in the winter. The blend just tends to be a little less ethanol. Buy a test kit and test your source. Going to still be your best choice as far as pump fuel goes.
 

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Discussion Starter #4
You can still run "e85" in the winter. The blend just tends to be a little less ethanol. Buy a test kit and test your source. Going to still be your best choice as far as pump fuel goes.
I am aware of this... I have the tester kit. Its not a winter car. It will be in storage all winter thus the tune for having the premium. I know I could just fill it with premium, drain and fill with E85 when the time comes. But I feel it best for me to have 2 different tunes. I was just curious on everyone's views on premium fuels overall...
 

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My .02

I would imagine that when it comes to pre-ignition and knock prevention for higher horsepower builds, octane would be octane.

87 < 91 < 93 < 94 < E85

I know here the HIGHEST octane level rated gas is from Sunoco and that is a 94 octane, I am not a fuel expert or anything but I know they might have certain additives which distinguish between them, but one would think Octane is Octane.

Personally there are no stations around here which provide E85, so I am going to be running with a water/methanol injection kit.
100 or i believe 110 is the highest pump fuel that is not ethanol based.
 

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dont worry about the actual gas. the STATION is what you need to worry about. a big name or chain will have a good filter system that is maintained regularly, and has their inspections actually done properly.

as for "premium" its a bunch of horse shit. They just toss in a few gallons of fuel cleaner for every few thousand they pump into the ground tanks. It ends up so diluted it doesnt barely do anything.

MARKETING MARKETING MARKETING.. jsut like the "demand" for 3k mile oil changes. freaking honda has never had an oil change on the civics rated for under 5k miles in 25 years for their described "normal" conditions
 

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So off topic, but IMHO 3k miles is the max id go on conventional! :D
Im a cheap bastard, so when my cars were stock I followed the oem stuff. the half dozen d15b7's Ive owned all got 6-7500 intervals. I just used high mileage varieties of what was on sale at the time.
 

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Perks of being in the UK. 99 is readily available and you don't find less than 96 :)
Although we get raped on price. We pay £1.15 for 99 (1 dollar 75 or so)
 

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Discussion Starter #13
I guess my main question was if there are really any true differences between any of the new "top tier" fuels.... but it seems like most of the fuel is pretty much the same as far as pump gas goes... Im going to try BP and see how my car likes it compared to SA...
 

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I know in a Leaky H22 losing a Qt. a Tank, AMPM gas would throw a code for knock sensor. Went away with Chevron/Shell. All premium. Just a story. I always used Shell Premium and Rotella for the budget minded.
 

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I stick to 76 (Conoco Phillips) after using Arco (BP) for merely 2 years inbetween emissions tests and failing due to carbon deposits completely clogging the egr lines on the vg30, when the emissions test prior to switching to BP gas had passed with flying colors. After completely removing and cleaning the egr passages and using only 76 I passed the previously failed test and 2 years later with flying colors again with no sign of carbon build up.

Throughout the whole 6 year period the oil changes were frequently between no less than 7000 to 11000 miles between 180k and 220k on the never been disassembled engine using Mobile 1 super 5000 conventional. Still going strong and needing an oil change soon as it's been around 8000 since the last one.
 

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Been running 87 for ever, get good mileage and because I am stock, it never misfires due to fuel grade/octane. Still not sure why people think these old motors like that gas. I mean if you change the fueling and ecu, and turbo it sure. Other wise I feel like you are wasting your money, but it is yours to waste.

On the other hand, I put cheap gas in my new van....no wait it runs fine too. The only car I have had issues with cheap gas, no low octane, was my turbo Volvo. My .02.

If you drop by a no name station, with the lowest prices in town, you are playing russian roulette.
 

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when I had 93 octane in the Fit, it took about a full tank to "set up" for it.

The real way I knew it made a difference, is if I was using 93 octane for weeks and weeks, if I suddenly filled a tank from Empty to Full, the car liked burping and farting letting off the gas, and the car randomly seemed laggy, until it (the ecu) figured it out.


Id say 2005 (thereabouts) or newer hondas is when they started to be sensitive to what was in the tank
 

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I only run 93 octane in a car with a turbo set up because that's what it was tuned on. My Fit and all other cars get 87 octane and run great. I put 93 in my hatch when it had the stock d15 in it and I'd say it may have ran worse. No benefits. The only reason to run higher octane fuel is for the higher knock threshold which is applicable in high compression motors and boosted set ups. I think my B16A suggested premium fuel (91+ octane) in stock form. But most of the time you can run 87/89, whatever low octane fuel is around.
 

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Not a Honda might you, but I've ran just about every gas station PREMIUM fuel I have in town. Anything from Shell, Exxon, Marathon, to ethanol-free 93 octane; I've measured no ill effects in fuel mileage or felt any performance losses due to the fuel I was running at the time. So right now I just go wherever it is cheapest...which just so happens to be Sams Club @ $2.07/gal (for 93oct)!
 
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