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#268634 - 09/23/03 07:37 AM My homemade fuel additive, octane boost
Pablo Offline


Registered: 10/28/02
Posts: 47129
Loc: Duvall WA - Pacific NW USA
No I'm not selling this...but it does work.

1 quart xylene (octane boost)
6 oz Amsoil PI (cleaning, UCL)
1 oz Amsoil Gas Fuel Stabilizer
1 oz 100:1 2-cycle oil (UCL)

Mix in one gallon metal gas can. Pour in 1/2 full tank, and bounce car. My turbo with K-jet returns unused fuel to the tank so it mixes well.

Holy batman - full boost, not one ping.

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#268635 - 09/23/03 08:50 AM Re: My homemade fuel additive, octane boost
Last_Z Offline


Registered: 10/21/02
Posts: 2790
Loc: San Antonio, TX
quote:
Originally posted by Pablo:
No I'm not selling this...but it does work.

1 quart xylene (octane boost)
6 oz Amsoil PI (cleaning, UCL)
1 oz Amsoil Gas Fuel Stabilizer
1 oz 100:1 2-cycle oil (UCL)

Mix in one gallon metal gas can. Pour in 1/2 full tank, and bounce car. My turbo with K-jet returns unused fuel to the tank so it mixes well.

Holy batman - full boost, not one ping.

I [Patriot] you Pablo for bravery....I hope your car doesn't take off or worse yet.... [crushedcar]

Rick


EDIT: BTW, isn't that Xylene stuff a paint thinner? Wouldn't it dry out o-rings and mess up injectors?

[ September 23, 2003, 11:51 PM: Message edited by: Last_Z ]

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#268636 - 09/23/03 04:41 PM Re: My homemade fuel additive, octane boost
Pablo Offline


Registered: 10/28/02
Posts: 47129
Loc: Duvall WA - Pacific NW USA
Many of the off the shelf octane boosters contain toulene and/or xylene. Straight, sure it's not the best thing for elastomers. That's why it's mixed with the other stuff and the gas in the tank. Some web formulation call for a gallon!

Xylene is used for thinning some enamel type paints, but regular new style paint thinners don't contain too much xylene.

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#268637 - 09/23/03 04:58 PM Re: My homemade fuel additive, octane boost
n8wvi Offline


Registered: 09/16/02
Posts: 622
Loc: 42.4N 85.7W
I thought I was the only one who did things like this! I never wanted to admit it, but now I can 'come out of the closet'! I mix ~12 oz of toluene in the summer (or ~6 anhydrous isopropanol in the winter) w/ 1 oz of Amsoil 100:1 two stroke oil. I get the toluene at a paint store by the gallon and the isopropanol in the pharmacy section of the local grocery (making sure not to get the 70% stuff). I go to the pharmacy section 'cuz it's usually cheaper there than in the auto section for the exact same stuff in a different bottle.

Dave

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#268638 - 09/23/03 05:41 PM Re: My homemade fuel additive, octane boost
Pablo Offline


Registered: 10/28/02
Posts: 47129
Loc: Duvall WA - Pacific NW USA
Hadn't done the alky thing before...interesting.

I need to clarify on the 2-stroke oil, actually that should read 1/2 oz (didn't catch that until n8wvi's post). 1 oz won't hurt anything, but maybe cut back the octane rating a bit.

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#268639 - 09/24/03 09:44 AM Re: My homemade fuel additive, octane boost
Pablo Offline


Registered: 10/28/02
Posts: 47129
Loc: Duvall WA - Pacific NW USA
OK now here's the weird thing: Nothing stastitical, no real facts, but: My MPG seems to have increased substantially. I realize that I added some (small) volume to the gas tank, but I know my commute well, I know my car, I know my fuel - and the car just is not using as much gas...

I need to study this some more.

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#268640 - 09/23/03 10:58 PM Re: My homemade fuel additive, octane boost
MolaKule Offline


Registered: 06/05/02
Posts: 18046
Loc: Iowegia - USA
n8vi,

FYI: The isopropyl already has some oil in it.

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#268641 - 09/24/03 05:41 AM Re: My homemade fuel additive, octane boost
n8wvi Offline


Registered: 09/16/02
Posts: 622
Loc: 42.4N 85.7W
Uh....... 99% Isopropyl alcohol has oil in it? The other 1% (or darn near) is water, yes? So where's the oil? What type of oil? Certainly not enough to add the lubricity boost we're looking for.

Pablo, yes, I too have noticed added mileage. I average 34 MPG when I do this, 32 MPG when I don't. My car is driven 84 miles round trip, 80 of which are on the highway. Same route every day. On weekends, it's almost always in the garage (we take the wifes car). I'm the only one who drives mine and I always buy the same gas.

I've tried explaining to myself there must be other reasons, but the change is consistent and everything else w/ the car has been constant. Does that make sense?

Dave

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#268642 - 09/24/03 05:47 AM Re: My homemade fuel additive, octane boost
Pablo Offline


Registered: 10/28/02
Posts: 47129
Loc: Duvall WA - Pacific NW USA
Mola - I could see some water, some "other" alcohols - but is the oil added?

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#268643 - 09/24/03 08:23 AM Re: My homemade fuel additive, octane boost
Last_Z Offline


Registered: 10/21/02
Posts: 2790
Loc: San Antonio, TX
What is the acohol for guys? Would 90% be ok? I though above adding alky to the fuel, but I just don't know why! [Freak] I have some sort of impulsive addtive mixing....but it's only with the alcohol. I guess for some reason it might cure the pinging in my car; but I have no clue what to get and even less clues as to where I got the idea from.
I'm losing it guys.....all thanks to BITOG! [freaknout]

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#268644 - 09/24/03 04:23 PM Re: My homemade fuel additive, octane boost
Pablo Offline


Registered: 10/28/02
Posts: 47129
Loc: Duvall WA - Pacific NW USA
Last Z - Alcohol can provide a mild octane (antiknock) boost, but it's energy values are low. As mentioned by n8, it must be dry.

I 100% do NOT recommend dumping stuff in your gas tank unless you have studied the science a bit. My car has 240,000 miles on it...but I still do care for it.

I rarely add off the shelf fuel additives. This "formula" I posted is relatively safe, but you are on your own. Xylene can be purchased at most good paint supply/hardware stores. It's NOT cheap anymore - Lowe's sells a gallon for $9.xx!!!! - but I guess relative to buying a 12 oz can of off the shelf stuff, you can stretch it out. The other things are to add some lubricity and help prevent deposit formation.

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#268645 - 09/24/03 11:08 PM Re: My homemade fuel additive, octane boost
rat_rider Offline


Registered: 01/14/03
Posts: 11
Loc: Bellingham, WA, USA
So are you able to run 85 octane fuel and still get full boost with this brew?

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#268646 - 09/24/03 11:41 PM Re: My homemade fuel additive, octane boost
Pablo Offline


Registered: 10/28/02
Posts: 47129
Loc: Duvall WA - Pacific NW USA
quote:
So are you able to run 85 octane fuel and still get full boost with this brew?
[Big Grin] good one!! I wish! Do they sell 85 octane? 87 is the lowest, my Bellingham buddy, non?

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#268647 - 09/25/03 01:27 AM Re: My homemade fuel additive, octane boost
rat_rider Offline


Registered: 01/14/03
Posts: 11
Loc: Bellingham, WA, USA
One never knows when the urge for a road trip will hit. Gotta plan for those remote locations and crappy fuel. Still working on a way to get kerosene to work...

Latre
Ben

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#268648 - 09/26/03 09:53 AM Re: My homemade fuel additive, octane boost
Pablo Offline


Registered: 10/28/02
Posts: 47129
Loc: Duvall WA - Pacific NW USA
rat - I imagine if you did buy enough xylene or toulene - you could hop it up enough....but are those available where the gas in 85 octane?

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