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

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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
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BCNU
Champion Author British Columbia

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

no
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HideMKE
Champion Author Milwaukee

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

no
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hoofharted
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Message Posted: Jan 30, 2015 3:38:25 AM

no
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Foolingurself
Veteran Author California

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

No.
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speedy_911
Champion Author Phoenix

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

Nope
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8_Ball2014
Champion Author North Dakota

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

no
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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?
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Mininana
Sophomore 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
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JohnCur
Veteran Author New Jersey

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

no - 87
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RalphHightower
Champion Author South Carolina

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

no
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BCNU
Champion Author British Columbia

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

no
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moxxor54
Sophomore 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.
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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.
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PaylessKY
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Message Posted: Jan 26, 2015 2:40:05 PM

No
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nickless
Champion Author PEI

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

No
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hyeglenn
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Message Posted: Jan 24, 2015 1:53:23 PM

NO.
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RacksnSpurs
Sophomore Author Raleigh

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

No
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WEDDY
Champion Author Phoenix

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

No
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BCNU
Champion Author British Columbia

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

no
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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.
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carinthuist
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Message Posted: Jan 23, 2015 3:02:51 PM

no
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BCNU
Champion Author British Columbia

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

no
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PaylessKY
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Message Posted: Jan 22, 2015 3:37:37 PM

No
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Gabilondo
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Message Posted: Jan 22, 2015 2:30:37 PM

no
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nickless
Champion Author PEI

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

no
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ecsojay
Veteran Author Tampa

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

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

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

Nope, only use 87
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cv
Champion Author Raleigh

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

Sometimes I do that.
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JoeKing
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Message Posted: Jan 20, 2015 2:36:15 AM

no
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SRT8TX
Champion Author Dallas

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

93 octane in my Charger.
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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.
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carinthuist
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Message Posted: Jan 17, 2015 11:31:07 AM

no
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nickless
Champion Author PEI

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

No
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pilotdlh
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Message Posted: Jan 15, 2015 11:51:43 AM

Never
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dontuknowOH
Champion Author Ohio

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Message Posted: Jan 15, 2015 10:15:46 AM

87 and no complaints.
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badbobKY
Champion Author Lexington

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Message Posted: Jan 15, 2015 8:41:09 AM

87
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RalphHightower
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Message Posted: Jan 15, 2015 6:20:38 AM

no
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hoopitup2000
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Message Posted: Jan 15, 2015 6:05:16 AM

No, but I guess it works for some.
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nickless
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Message Posted: Jan 15, 2015 3:49:47 AM

No
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dontuknowOH
Champion Author Ohio

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Message Posted: Jan 14, 2015 8:12:35 PM

Only own two vehicles that require premium, seldom mileage is their game. So they presently aren't eating any green $$$ hay.
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46chief
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Message Posted: Jan 14, 2015 3:59:05 PM

no
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marcusp2236
Sophomore Author North Carolina

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Message Posted: Jan 11, 2015 10:33:00 AM

Honda Gold Wing premium pure gas only if available
Subaru outback regular unleaded
Mitsubishi 3000 gt premium unleaded
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mtnrambo
Champion Author West Virginia

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Message Posted: Jan 11, 2015 6:57:51 AM

i burn premium in everything
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nickless
Champion Author PEI

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Message Posted: Jan 11, 2015 4:17:21 AM

no
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twt
Champion Author Virginia Beach

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Message Posted: Jan 10, 2015 9:29:51 AM

I use, what the manufacturer recommends.
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RalphHightower
Champion Author South Carolina

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Message Posted: Jan 10, 2015 7:26:20 AM

no
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BCNU
Champion Author British Columbia

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Message Posted: Jan 10, 2015 3:58:53 AM

no
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hoopitup2000
Champion Author Virginia

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Message Posted: Jan 9, 2015 2:28:17 PM

No, I only use 87
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mybigtruck
Champion Author San Jose

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Message Posted: Jan 9, 2015 1:25:41 PM

yep, octanes mix linearly. Premium is cheaper than midgrades at some warehouse gas stations, so I just get premium instead of midgrade to avoid the hassle
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redfish67
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Message Posted: Jan 9, 2015 9:56:28 AM

no
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WEDDY
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Message Posted: Jan 9, 2015 9:35:06 AM

No, I use 87 octane.
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