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02-08-2006, 05:41 PM | #1 |
Scooby Newbie
Member#: 104538
Join Date: Jan 2006
Location: Grant Pines aka Sherman Oaks
Vehicle:2006 WRX STI Obsidian Black |
better mpg on 100 octane?
besides the obvious
i've put 7 gallons of 100 octane + 7 gallons of 91 = got 240 miles on that tank. put all 91 in and got only 190 miles on that tank. Am I just crazy?
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02-08-2006, 05:45 PM | #2 |
Scooby Specialist
Member#: 49624
Join Date: Dec 2003
Location: CA
Vehicle:04 AW WRX 13 SWP STi |
Not crazy. But if you think about it... it cost you just about the same.
100+91 = $50 91 full tank = $35-$40 Plus another 50 miles? So it seems like it evens out. |
02-08-2006, 05:47 PM | #3 |
Scooby Specialist
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lol similar to what happens to mine with 101 unleaded mix I use. 190-210 on 91 and 250-270 on 101/91 mix.
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02-08-2006, 05:51 PM | #4 |
Scooby Newbie
Member#: 104538
Join Date: Jan 2006
Location: Grant Pines aka Sherman Oaks
Vehicle:2006 WRX STI Obsidian Black |
cool. I'm not nuts . I guess if it's the same cost in the end... 100-combo please!
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02-08-2006, 09:00 PM | #5 |
Scooby Specialist
Member#: 32955
Join Date: Feb 2003
Chapter/Region:
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Location: Pasadena, CA
Vehicle:'03 WRX Wagon '89 3S-GTE Alltrac Camry |
IF the car is able to use the extra octane (turbo and high compression motors), you can see some mileage improvement with higher octane gas... I'm quite surprised that you saw such an improvement. Are you sure your driving habits didn't change between those two tanks?
-Charlie |
02-09-2006, 12:09 AM | #6 | |
Scooby Specialist
Member#: 81322
Join Date: Feb 2005
Chapter/Region:
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Location: Pomona SoCal
Vehicle:12/6 Sti/Fo swp/CGM |
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02-09-2006, 12:15 AM | #7 | |
Scooby Specialist
Member#: 28475
Join Date: Oct 2002
Chapter/Region:
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Location: So Cal
Vehicle:86 RX-7 CTS-V |
Quote:
Ashley |
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