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Author Topic: Do you use 91 octane or mix grades to save money? Back to Topics
Sal30
Rookie Author
Philadelphia

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Message Posted: Nov 26, 2013 3:13:41 AM

My turbo charged 2002 Volkswagen Passat requires 91 octane gas. I used to just use 93 premium back in the day, but then I realized that I could save money by mixing grades. At first I used to mix 50% 93 and 50% 89 to get 91 octane. I later realized that it was cheaper to mix 66.666% 93 and 33.333% 87 to get 91 octane.
I do waste a little extra time, but I think it's well worth the money I save which will really add up over the lifetime of the car.
REPLIES (newest first) Post a Reply
JoeKing
Champion Author Manitoba

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Message Posted: Feb 11, 2015 2:19:16 AM

no
WilhamClouse
Champion Author Calgary

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Message Posted: Feb 10, 2015 10:27:15 AM

No.
twt
Champion Author Virginia Beach

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Message Posted: Feb 10, 2015 3:44:37 AM

87 in the F150. 93, in the Harley.
outlaw329
Champion Author Austin

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Message Posted: Feb 10, 2015 1:05:05 AM

no
Gabilondo
Champion Author New Mexico

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Message Posted: Feb 9, 2015 5:20:22 PM

no
Mizzer1
Champion Author Worcester

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Message Posted: Feb 8, 2015 12:02:44 AM

No
SAButton
Veteran Author Atlanta

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Message Posted: Feb 7, 2015 11:56:06 AM

No, but if my car required 91, I use it
PaylessKY
Champion Author Kentucky

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Message Posted: Feb 7, 2015 8:44:43 AM

No, I use 87 octane.
JoeKing
Champion Author Manitoba

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Message Posted: Feb 7, 2015 3:31:47 AM

no
carinthuist
Champion Author San Francisco

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Message Posted: Feb 6, 2015 11:22:58 AM

no
PatAZ
Champion Author Tucson

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Message Posted: Feb 6, 2015 10:40:43 AM

Always run at least 91.
JohnCur
All-Star Author New Jersey

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Message Posted: Feb 6, 2015 10:03:18 AM

my 1992 Camry V-6 used 92 or 93 ... current cars use 87
Mininana
Champion Author New York

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Message Posted: Feb 6, 2015 8:51:36 AM

it depends on the price differential.... I have little tolerance for a price differential of more than 10 cents grade to grade, and here there are many stations where it's close to 25, so I do a little mixing and alternative filling there...
hoopitup2000
Champion Author Virginia

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Message Posted: Feb 6, 2015 6:18:46 AM

No, never have owned a vehicle that needed more than 87 octane.
JoeKing
Champion Author Manitoba

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Message Posted: Feb 6, 2015 5:55:33 AM

no
redfish67
Champion Author Dallas

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Message Posted: Feb 4, 2015 1:48:37 PM

no
speedfreek
Rookie Author Edmonton

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Message Posted: Feb 4, 2015 11:40:08 AM

No I don't mix grades primarily because I don't see the point of using 87 with 10% ethanol. Vehicles tend to run better without that in the equation...

If you track your mileage, I'd love to know how badly you suffer by adding ethanol vs just using 91 (hopefully without ethanol - here in Canada most 91 is ethanol free unless you're at a station where they sell the 94 ethanol boosted fuel which then they just mix at the pump).

Curious

[Edited by: speedfreek at 2/4/2015 11:41:56 AM EST]
jdmd6613
Champion Author Memphis

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Message Posted: Feb 4, 2015 9:30:38 AM

NO
BCNU
Champion Author British Columbia

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Message Posted: Feb 1, 2015 12:17:19 AM

no
HideMKE
Champion Author Milwaukee

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Message Posted: Jan 31, 2015 11:34:38 AM

no
hoofharted
Champion Author Wyoming

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Message Posted: Jan 30, 2015 3:38:25 AM

no
Foolingurself
All-Star Author California

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Message Posted: Jan 30, 2015 1:19:23 AM

No.
speedy_911
Champion Author Phoenix

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Message Posted: Jan 29, 2015 11:21:00 AM

Nope
8_Ball2014
Champion Author North Dakota

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Message Posted: Jan 29, 2015 6:25:09 AM

no
Maintroll
Champion Author Lexington

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Message Posted: Jan 29, 2015 5:16:01 AM

How can this be saving money when it costs more to do?
Mininana
Champion Author New York

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Message Posted: Jan 28, 2015 3:45:10 PM

mininana requires 90, I believe, which is seldom sold, at least not around here... we pay attention to the regular-plus-premium differential, and if it's 10 cents or less, we usually go for the higher... often "blend" 89 and sun's top-of-the-line 93, which often has just a two-cent differential above the 93
JohnCur
All-Star Author New Jersey

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Message Posted: Jan 28, 2015 8:38:10 AM

no - 87
RalphHightower
Champion Author South Carolina

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Message Posted: Jan 28, 2015 5:52:40 AM

no
BCNU
Champion Author British Columbia

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Message Posted: Jan 28, 2015 3:45:29 AM

no
moxxor54
Veteran Author Missouri

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Message Posted: Jan 27, 2015 2:30:58 AM

No. If I have a performance car, I will not waste time to mix gas.
dontuknowOH
Champion Author Ohio

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Message Posted: Jan 26, 2015 2:51:34 PM

Yes one could say I mix whatever is still in My tank with the refuel amount brand/grade stated only as regular on a given pump, when refueling.

I never run My vehicle tank empty for any reason except to replace it, having done that once, replaced the fuel tank and pump.
PaylessKY
Champion Author Kentucky

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Message Posted: Jan 26, 2015 2:40:05 PM

No
nickless
Champion Author PEI

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Message Posted: Jan 25, 2015 4:24:10 AM

No
hyeglenn
Champion Author Fresno

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Message Posted: Jan 24, 2015 1:53:23 PM

NO.
RacksnSpurs
Veteran Author Raleigh

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Message Posted: Jan 24, 2015 11:28:57 AM

No
WEDDY
Champion Author Phoenix

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Message Posted: Jan 24, 2015 10:45:19 AM

No
BCNU
Champion Author British Columbia

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Message Posted: Jan 24, 2015 5:18:55 AM

no
FieroGT
Champion Author Twin Cities

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Message Posted: Jan 23, 2015 10:17:15 PM

Do not use 91 octane. 87 octane works just fine.
carinthuist
Champion Author San Francisco

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Message Posted: Jan 23, 2015 3:02:51 PM

no
BCNU
Champion Author British Columbia

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Message Posted: Jan 23, 2015 3:07:23 AM

no
PaylessKY
Champion Author Kentucky

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Message Posted: Jan 22, 2015 3:37:37 PM

No
Gabilondo
Champion Author New Mexico

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Message Posted: Jan 22, 2015 2:30:37 PM

no
nickless
Champion Author PEI

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Message Posted: Jan 21, 2015 5:35:47 AM

no
ecsojay
All-Star Author Tampa

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Message Posted: Jan 20, 2015 9:51:59 PM

nope/....87 only
hoopitup2000
Champion Author Virginia

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Message Posted: Jan 20, 2015 6:24:27 AM

Nope, only use 87
cv
Champion Author Raleigh

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Message Posted: Jan 20, 2015 5:55:57 AM

Sometimes I do that.
JoeKing
Champion Author Manitoba

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Message Posted: Jan 20, 2015 2:36:15 AM

no
SRT8TX
Champion Author Dallas

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Message Posted: Jan 19, 2015 3:22:43 AM

93 octane in my Charger.
VWDeeZel
Veteran Author Ottawa

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Message Posted: Jan 19, 2015 12:54:26 AM

Straight.

91 octane in one vehicle and 100 or 102 in the other.
carinthuist
Champion Author San Francisco

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Message Posted: Jan 17, 2015 11:31:07 AM

no
nickless
Champion Author PEI

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Message Posted: Jan 17, 2015 1:31:03 AM

No
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