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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
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JohnCur
Veteran Author New Jersey

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Message Posted: Dec 19, 2014 12:12:44 AM

87
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Mikeyl
Champion Author Cleveland

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Message Posted: Dec 18, 2014 9:20:09 PM

87 - don't plan to buy a car that takes anything but regular gas, either!
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weddy11
Champion Author Phoenix

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Message Posted: Dec 18, 2014 8:50:22 AM

No
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hoopitup2000
Champion Author Virginia

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Message Posted: Dec 18, 2014 6:48:13 AM

No, I only do mixed drinks.
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GLM4205
Champion Author Toledo

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Message Posted: Dec 18, 2014 5:59:09 AM

What for???
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jl1rp
Champion Author New Hampshire

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Message Posted: Dec 18, 2014 12:48:49 AM

no
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redfish67
Champion Author Dallas

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Message Posted: Dec 17, 2014 10:24:07 AM

no
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AndreDmax
Rookie Author Richmond

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Message Posted: Dec 17, 2014 10:21:42 AM

When prices are high I mix 93/87 for my CX-7 and used to mix for my turbo volvo. Saves you about $.10 to $.20 per gallon compared to 93. I just make sure I pump at least 66% of 93 to get the minimum recommended 91 (usually no big deal if you mess up the mix, most vehicles have knock sensors that will retard the timing if you happen to pump lower octane gas so you'll most likely just lose some performance by using anything lower than 91 on a turbo/high compression motor).
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Glasman
Champion Author South Carolina

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Message Posted: Dec 17, 2014 9:16:51 AM

back in the day Gulf sold HALF/HALF 91 and 87 mixed.. might fine burning fuel.
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Grizzlyraptor2
Rookie Author Sacramento

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Message Posted: Dec 16, 2014 6:48:35 PM

No.
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carinthuist
Champion Author San Francisco

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Message Posted: Dec 16, 2014 2:40:56 PM

no
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nascar44
Rookie Author New Orleans

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Message Posted: Dec 16, 2014 1:08:43 PM

NO!
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JoeKing
Champion Author Manitoba

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Message Posted: Dec 16, 2014 6:24:35 AM

no
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HideMKE
Champion Author Milwaukee

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Message Posted: Dec 15, 2014 10:19:58 AM

no
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Maintroll
Champion Author Lexington

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Message Posted: Dec 15, 2014 9:51:44 AM

This does not save money and only costs you more.
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John_Doe
Champion Author Northwest Territories

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Message Posted: Dec 13, 2014 1:34:24 PM

no
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luvmyburgi
Champion Author Ohio

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Message Posted: Dec 13, 2014 1:13:28 PM

No
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HideMKE
Champion Author Milwaukee

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Message Posted: Dec 13, 2014 11:15:38 AM

no
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dontuknowOH
Champion Author Ohio

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Message Posted: Dec 13, 2014 11:07:57 AM

No I actually trust my cars manual on that one! The History of Me mixing my own blends is just not mentioned there.
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RalphHightower
Champion Author South Carolina

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Message Posted: Dec 13, 2014 6:08:52 AM

no
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PaylessKY
Champion Author Kentucky

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Message Posted: Dec 12, 2014 8:03:09 PM

No
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dmark101
Veteran Author Los Angeles

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Message Posted: Dec 10, 2014 9:41:53 PM

i use 91 because the car i'm currently driving requires it.
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luvmyburgi
Champion Author Ohio

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Message Posted: Dec 10, 2014 9:28:01 PM

No
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carinthuist
Champion Author San Francisco

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Message Posted: Dec 10, 2014 10:19:04 AM

no
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redfish67
Champion Author Dallas

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Message Posted: Dec 10, 2014 9:55:52 AM

no
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cv
Champion Author Raleigh

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Message Posted: Dec 10, 2014 6:14:35 AM

I have done that in the past.

[Edited by: cv at 12/10/2014 6:14:47 AM EST]
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RalphHightower
Champion Author South Carolina

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Message Posted: Dec 10, 2014 6:04:29 AM

no
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JoeKing
Champion Author Manitoba

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Message Posted: Dec 10, 2014 5:06:15 AM

no
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GasMiser718
Champion Author Detroit

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Message Posted: Dec 9, 2014 4:51:23 PM

No, use regular 87 octane
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ggg452
Champion Author Manitoba

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Message Posted: Dec 7, 2014 12:27:09 PM

No...regular is good....drain stored fuel in sled, bikes, atvs and mowers....
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GLM4205
Champion Author Toledo

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Message Posted: Dec 7, 2014 11:29:06 AM

No, only use regular
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PaylessKY
Champion Author Kentucky

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Message Posted: Dec 2, 2014 1:40:24 PM

No
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redfish67
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Message Posted: Dec 2, 2014 10:10:15 AM

no
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Mizzer1
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Message Posted: Dec 2, 2014 9:58:26 AM

No
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hoopitup2000
Champion Author Virginia

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Message Posted: Dec 2, 2014 6:58:10 AM

Nope . . . .
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MertieMan
Champion Author Lexington

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Message Posted: Dec 1, 2014 5:50:11 AM

This does not save money and may cost you money by clogging up the intakes on your car.
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Alexi7
All-Star Author Ohio

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Message Posted: Nov 30, 2014 11:14:31 PM

Sal: Sounds good in theory. As long as it works for you...
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carinthuist
Champion Author San Francisco

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Message Posted: Nov 30, 2014 1:48:30 PM

no
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hoopitup2000
Champion Author Virginia

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Message Posted: Nov 30, 2014 11:46:08 AM

No, only use regular
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Mikeyy1960
Veteran Author Cape Coral

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Message Posted: Nov 30, 2014 9:18:43 AM

no
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Nuzan
All-Star Author Nevada

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Message Posted: Nov 29, 2014 7:27:12 PM

No
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Sal30
Rookie Author Philadelphia

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Message Posted: May 9, 2014 12:05:53 AM

What is wrong with people's reading comprehension? I said my car REQUIRES 91 octaine minimum gas right in the first sentence of my original post. It says it right on the inside of the gas flap. Also, the way gas stations make midgrade gasoline is by mixing regular and premium so I'm doing the same thing they do. The only thing is that it's cheaper the way I do it because gas stations try to rip people off on mid grade gasoline.
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bcressy
Sophomore Author Boston

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Message Posted: Apr 14, 2014 2:03:29 PM

No, my car takes 87 :-)
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cityeng
Rookie Author Michigan

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Message Posted: Apr 14, 2014 10:21:25 AM

No
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Awing1
Champion Author Ontario

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Message Posted: Apr 14, 2014 9:06:35 AM

No, I don't mix it and don't think it's a good idea. Should use fuels what they are designed for, otherwise it might ruin the engine. In that case, you will lose a big thing to save small bucks on the fuel.
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PaylessKY
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Message Posted: Apr 14, 2014 8:23:51 AM

No
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Boyrr
Champion Author Allentown

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Message Posted: Apr 14, 2014 5:58:58 AM

I use what the machine is designed for
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deant99
Champion Author Ontario

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Message Posted: Apr 13, 2014 9:17:52 PM

no
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shinysideup61
Rookie Author North Carolina

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Message Posted: Dec 23, 2013 8:56:24 AM

I came across a product that helps fight against the harmful effects of Ethanol. It clears your lines, give better performance using lower octane and gas mileage. They have a 6 tank challenge that I took. After using one treatment I gained an extra 135 miles to the tank. I'm impressed! If you want to check it out go to: scroll to (shop). The challenge costs about 36 bucks but I can see I'll get my returns on my money in no time.
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WEDDY
Champion Author Phoenix

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Message Posted: Dec 22, 2013 9:58:08 AM

No.
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the1roadhog
Champion Author Atlanta

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Message Posted: Dec 22, 2013 7:31:48 AM

Either go for it, or don't.
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