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High Test Gas

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Old 12-03-2015, 01:31 PM
  #16  
Carmichael
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$2.93/gallon in the Chicagoland area.

Well over $3.00 within Chicago city limits.

Maybe Mr. Raby can make a living selling low compression, lean-burn M96/97s that run on 87 octane for you Porsche hypermilers.
Old 12-03-2015, 02:05 PM
  #17  
DGrayling
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In Eastern Pennsylvania, Costco Wholesale charged $0.19 more per gallon for 93 octane vs 87 octane today. Both octanes are top tier rated. I used to buy Shell 93 exclusively for my 997.2 but have switched to Costco and have not really noticed a difference.
Old 12-03-2015, 03:11 PM
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Philster
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What difference did you expect?

Some non-ethanol fuels are valuable, even at that price, to people that have cars and boats with powertrains that are going to degrade with ethanol fuels. It's very common for boaters to care, since many, many older engines are out there not ready for ethanol.

The difference you potentially could experience with non-ethanol fuel would be measured over a long period of time in a vehicle that would otherwise have degradation from ethanol it wasn't designed to carry, pump, and ignite.

.

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Old 12-03-2015, 03:40 PM
  #19  
Devil Boy
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< had to Google the term high test gas.
Old 12-03-2015, 05:12 PM
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wc11
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My only recollection of the term "high test".
Must have been a 70's thing.

Old 12-03-2015, 05:32 PM
  #21  
yvesvidal
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Excellent Video and excerpt from a James Bond movie.

What we need is a sticker "Porsche FlexFuel" on the rear.

Yves
Old 12-03-2015, 07:27 PM
  #22  
dasams
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Originally Posted by Philster
Supply and demand.
The increase is the number of high compression engines is pushing the demand up. At the same time, the EPA has new rules that require cleaner burning gasoline. To comply, the refiners will reduce the sulfur and nitrogen content and in doing so the octane will also be reduced (they don't want this any more than you do). The result will be fewer gallons of premium produced and a higher spread between the two grades. How else to match the supply and demand?

We went through this in CA in the late 90's and found ourselves octane short. Consequently, premium octane was reduced form 93 to 92 and then to 91 where it sits today. I've written about this in the past and my guess is that 91 premium is coming to a station near you
Old 12-03-2015, 07:44 PM
  #23  
Lvt19672
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[QUOTE=Tcc1999;12806755]BWAAH-HA-HA. You want high gasoline prices come to California. $2.99/gal. for premium is close to the going rate here. I haven't seen $1.99 since March of 2008 at an Chevron Station in Alamo (CA) (it was actually $1.86 for premium). Along with Earthquakes, a lack of water and upwards of a 10% State income tax (on top of an 8% to 9.5% sales tax), high gasoline prices are just one of the many things we tolerate in "The Golden State" which always seems to be on the verge of insolvency.
Don't you just love Cali? We're #1 lol
Old 12-04-2015, 07:49 AM
  #24  
Fahrer
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[QUOTE=wc11;12810772]My only recollection of the term "high test".
Must have been a 70's thing.

Uh...... I believe the term "high test" goes a bit further back than that.
Old 12-04-2015, 09:33 AM
  #25  
wc11
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[QUOTE=Fahrer;12812459]
Originally Posted by wc11
My only recollection of the term "high test".
Must have been a 70's thing.

Uh...... I believe the term "high test" goes a bit further back than that.
Probably, but I'm not that old

Oh and premium gas is over $5 up here in Canada so I'll take US prices anytime.
Old 12-04-2015, 10:17 AM
  #26  
NAM VET
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I try to refuel here in SC, and not up in NC, partly because my home state is less expensive, and besides, I want my taxes to stay SC. Yesterday, I headed up to Charlotte to work a few hours, and noted as I was just into NC, (I live just a few miles south of the boarder), in our GT3 and noted my fuel was low, and while I was pretty sure I could get up and back on what I had in my tank, I just didn't want to coast to a stop on the return interstate. So went ahead and filled my tank in Charlotte, and later in the day, tanked up my Jag here in SC, and noted "high test", our 93 octane, was 60 cent a gallon cheaper in SC, and a bit of mental math showed my fill up in NC cost me about 5 bucks more than if I had done so in SC, at least in my community.

And like others, a few years ago, the difference in 87/89/93 octane was about ten cents between each.

I am just glad it isn't near 4 bucks a gallon like it was back in the last shortage.

I can't get high octane non-ethanol gas here in my small city, but do use 87 octane non ethanol in my Power Products. If you are interested in the benefits of 10% ethanol in premium gas for high output motors, Excellence mag had a nice response in the mag several months ago. Basically, the cooling effect of the ethanol is very important in high compression motors, and ultimately allows for a manufacturer to make more powerful engines.

But when my community's fuel stations all went to year around 10% ethanol gas a few years ago, it was the reason I sold my 140K mile beloved Superformance Cobra replica, as no matter what I tried to do, my race Holley carb would just percolate or boil over and stall and become almost undriveable in summer heat. That, and the motor was getting a bit tired, and was going to need a rebuild.

All the best...
Old 12-18-2021, 11:10 AM
  #27  
CodyBigdog
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I think 40-100 is a better metric…and a more realistic speed band during normal driving on a highway.

Last edited by CodyBigdog; 12-18-2021 at 11:12 AM.



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