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04-16-2011, 06:40 PM
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CC Member
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Join Date: Sep 2009
Location: Camarillo,
CA
Cobra Make, Engine: SPF #2608, Roush 427SR T-W
Posts: 911
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Not Ranked
Whoa! Lousy Mileage in the Garage!
I parked the Cobra in my garage in December with the battery tender. We have had a wet spring and today was the first gas I bought. It seems as though 3.5 gallons evaporated out of my tank over the 4 months! Is that possible? I keep really good records on my mileage and I got 9 MPG on this tank when I drove it only 118 miles. I usually get 13 MPG. I have a good gas cap (I think), so I'm really surprised. This was my first winter, is this common?
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04-16-2011, 07:17 PM
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CC Member
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Join Date: Apr 2007
Cobra Make, Engine: # 757 ERA 427 SC , 482 Al. big block
Posts: 896
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Not Ranked
WardL .... entirely possible as the new fuels are entirely different from what we used to get . I was talking to a performance carb shop the other day trying to find out why my float bowls were dry after several weeks .... and no fuel puddling on the manifold floor . That`s when he told me about the fuel evaporation .... also , your tank isn`t a sealed unit , so fuel can and will evaporate .
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04-19-2011, 06:37 AM
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CC Member
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Join Date: Jan 2010
Location: Sun City West,,
AZ
Cobra Make, Engine: SPF2984 MK111, Roush 511 IR FE 8 Stack, Dynoed: [flywheel] 572HP at 6000 , 556# Torque at 4700, Bowler 4R70W Auto Transmision. Tires: Mickey T's S/R 26.0x10.0x15.0 F ,26.0x12.0x15.0 R Color, Bleck, because they told me it was Bleck, at the factory.
Posts: 1,480
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Not Ranked
Try this on....
Quote:
Originally Posted by WardL
I parked the Cobra in my garage in December with the battery tender. We have had a wet spring and today was the first gas I bought. It seems as though 3.5 gallons evaporated out of my tank over the 4 months! Is that possible? I keep really good records on my mileage and I got 9 MPG on this tank when I drove it only 118 miles. I usually get 13 MPG. I have a good gas cap (I think), so I'm really surprised. This was my first winter, is this common?
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WardL, so how many times did you sit in the car and go vroom, varoom? As I understand it from these threads there is a decidedly symbiotic relationship between the car and owner and even though the car was garaged, it did not fully comprehend and thus it assimilated your emotions cranked itself into virtual overdrive and thus experienced a loss of fuel because it visualized it was on the track. Sounds plausible to me, did you notice a high state of tension from the Cobra when you emitted the vroom, varoom, just curious? 
Any counter arguments to this hypothesis, evaporation notwithstanding?
Cheers,tin-man
__________________
Be well, drive fast, live long 
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04-19-2011, 06:43 AM
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CC Member
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Join Date: Nov 2001
Location: Windham,,
Me
Cobra Make, Engine:
Posts: 1,590
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Not Ranked
The fuel we are offered or forced to use today is very hard on the systems and if you neglect it,plan on all kinds of problems.
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04-19-2011, 07:09 AM
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Senior Club Cobra Member
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Join Date: Dec 2001
Location: Shasta Lake,
CA
Cobra Make, Engine:
Posts: 26,615
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Not Ranked
If your car or anything else is going to set for a period of time, add Stabil or drain the tank. This stuff they pass off as gasoline today is a joke around here. I add some of my 110 racing gas to the tank from time to time and that really helps. Also I can get 93 octane unleaded without any of the Ethanol/Alcohol in it and that makes a big difference but I haven't had to take any of my lawn and garden equipment in to have it worked on.
Ron  |
04-19-2011, 05:58 PM
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CC Member
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Join Date: May 2006
Location: St. Louisville,
Oh
Cobra Make, Engine: A&C 67 427 cobra SB
Posts: 2,445
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Not Ranked
Any kids needing gas for a motor cycle, 4-wheeler, snow mobile, etc.?
Siphon hoses work well!
I don't see 3 gallons evaporating, but maybe a couple. That's a gut feel - no science.
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04-19-2011, 06:00 PM
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CC Member
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Join Date: May 2006
Location: St. Louisville,
Oh
Cobra Make, Engine: A&C 67 427 cobra SB
Posts: 2,445
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Not Ranked
deleted a duplicate post
Last edited by olddog; 04-19-2011 at 06:02 PM..
Reason: deleted a duplicate post
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04-19-2011, 06:34 PM
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CC Member
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Join Date: Sep 2010
Location: starke,
fl
Cobra Make, Engine: Contemporary Classic Car Co. replica of 1966 Cobra made in 1988 with big block bowtie (600 hp 454), Bought about 4 months ago
Posts: 80
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Not Ranked
ETHANOL!! WHAT A DEAL!!
-costs more to produce a gallon of ethanol than a gallon of gasoline-
-gallon of ethanol has about 85% of the energy of a gallon of gasoline-
-your fed. govt. subsidizes the production of ethanol with your tax dollars-
-every kernal of corn used to make ethanol drives up the price of any food products made with corn-
-ethanol is death on any open fuel system (currently spending $400+ to repair the fuel system on my outboard motor)-
WHAT COULD BE B ETTER THAN YOUR GOVERMNMENT AT WORK!!!!
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04-19-2011, 08:41 PM
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Senior Club Cobra Member
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Join Date: May 2001
Location: Florence,
AL
Cobra Make, Engine: RCR GT 40 & 1966 Fairlane 390 5 speed
Posts: 4,511
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Not Ranked
Gas Mileage???????????????????????? In a Cobra???
__________________
''Life's tough.....it's even tougher if you're stupid.'' ~ John Wayne
"Happiness Is A Belt-Fed Weapon"
life's goal should be; "to be smarter than inanimate objects"
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04-21-2011, 01:59 PM
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CC Member
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Join Date: Jan 2008
Location: Sacramento, CA,
Posts: 636
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Not Ranked
Quote:
Originally Posted by Ron61
If your car or anything else is going to set for a period of time, add Stabil or drain the tank. This stuff they pass off as gasoline today is a joke around here. I add some of my 110 racing gas to the tank from time to time and that really helps. Also I can get 93 octane unleaded without any of the Ethanol/Alcohol in it and that makes a big difference but I haven't had to take any of my lawn and garden equipment in to have it worked on.
Ron |
Hey Ron,
Do you have any experience/opinions on the use of octane booster?
Ron |
04-21-2011, 02:38 PM
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CC Member
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Join Date: Aug 2006
Location: Broken Arrow,
OK
Cobra Make, Engine: FFR MK III,462 FE/TKO 600, IRS w/3.27
Posts: 129
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Not Ranked
Quote:
Originally Posted by scaffold
ETHANOL!! WHAT A DEAL!!
-costs more to produce a gallon of ethanol than a gallon of gasoline-
-gallon of ethanol has about 85% of the energy of a gallon of gasoline-
-your fed. govt. subsidizes the production of ethanol with your tax dollars-
-every kernal of corn used to make ethanol drives up the price of any food products made with corn-
-ethanol is death on any open fuel system (currently spending $400+ to repair the fuel system on my outboard motor)-
WHAT COULD BE B ETTER THAN YOUR GOVERMNMENT AT WORK!!!!
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agreed......look at food labels, how many are sweetened with "high fructose corn syrup"? When the price of corn went up, the farmers are forced to feed other grains to livestock, so the price of all other grains went up substanially too! Corn > ethanol is taking food off of our table, either directly or indirectly.
And, corn > ethanol is NOT sustainable for the long term. Maybe with switchgrass or some other feed stock. Time will tell.
__________________
Wideglidejoe
FFR#6143 Mk III: FE 462" w/four 48 IDA Weber's w/TKO 600 .82, IRS w/3.27, 17" Team III's w/245/45's & 315/35's. Gas N's.
Picked it up end of Aug '08
First start May 12, '10
First go kart May 26, '10
Tag & title 5-26-11, driving in gel coat
Painted Nov 2015
'05 Harley Wide Glide (60 hp stock, now 107 hp & 107 ft/lbs at wheel. Mid 11's in the 1/4 mi.)
'55 Bel Air hot rod project (WIP)
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