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Avgas 100ll vs. Truefuel
Posted on 7/2/19 at 4:43 pm
Posted on 7/2/19 at 4:43 pm
I've been running Truefuel in my 2 stroke lawn equipment for years with no issues except for price. I have access to Avgas 100ll and finally bought me a metal gas can to store it with. Mixed in some synthetic oil and I can tell you it is better than Truefuel. Took temp readings at the head with my infrared thermometer AND the Avgas is running 25 degrees cooler than Truefuel.
Avgas had a shelf life of about 5 years and contains natural oxidizers.
Cost is $5.50 a gallon vs. $20 a gallon for Truefuel. Oil was $5.00 for a 20 gallon mix.
Avgas had a shelf life of about 5 years and contains natural oxidizers.
Cost is $5.50 a gallon vs. $20 a gallon for Truefuel. Oil was $5.00 for a 20 gallon mix.
This post was edited on 7/2/19 at 4:52 pm
3
Posted on 7/2/19 at 6:12 pm to Bedhog
TruFuel is mostly naphtha, which has about 10% less energy per unit volume than gasoline. I notice my equipment runs better on my own mix but I still use TruFuel as a flush at the end of the season for the stuff that doesn't get used again for a few months and for the stuff that only sees occasional use.
Posted on 7/2/19 at 6:16 pm to Clames
No man
It is not naphtha. Look up Aspen fuel. I have been a mechanic for a very long time and have been interested in these fuel alternatives for a very long time.
Naphtha is Coleman fuel. Almost diesel.
It is not naphtha. Look up Aspen fuel. I have been a mechanic for a very long time and have been interested in these fuel alternatives for a very long time.
Naphtha is Coleman fuel. Almost diesel.
Posted on 7/2/19 at 6:18 pm to Bedhog
Posted on 7/2/19 at 6:21 pm to Clames
You're thinking about jet fuel. I've seen turbine motors run on Jet A, diesel and cooking oil.
Posted on 7/2/19 at 7:26 pm to Bedhog
No, I'm right. Go look up the SDS sheets on this stuff.
50-60% Naphtha and the rest is two-stroke oil, stabilizers, octane modifiers, and detergents.
Not even close to diesel. It's white gas and is far more volatile and less energy-dense than diesel.
quote:
TruFuel 50:1 Mix
Naphtha (petroleum), full-range alkylate, butane-contg. 68527-27-5 50 - 60
isopentane 78-78-4 10 - 20
pentane 109-66-0 10 - 20
toluene 108-88-3 5 - 10
xylene 1330-20-7 5 - 10
ethylbenzene 100-41-4 1 - 5
50-60% Naphtha and the rest is two-stroke oil, stabilizers, octane modifiers, and detergents.
quote:
Naphtha is Coleman fuel. Almost diesel.
Not even close to diesel. It's white gas and is far more volatile and less energy-dense than diesel.
This post was edited on 7/2/19 at 7:29 pm
Posted on 7/2/19 at 8:38 pm to Clames
Naphtha is a general industry term used to describe various light ends.
Alkylate Naphtha is a product of reformation that's used to boost octane.
Not trying to argue with anyone, but not all naphthas are created equal.
Alkylate Naphtha is a product of reformation that's used to boost octane.
Not trying to argue with anyone, but not all naphthas are created equal.
Posted on 7/2/19 at 11:49 pm to Bedhog
I used 100ll gas years ago and stopped because it will clog up a carb quick with lead residue if you leave it in there for a few weeks in a hot environment. It’s best to retune the carb if you’re going to run it too.
Posted on 7/3/19 at 12:01 am to TheDrunkenTigah
quote:
Not trying to argue with anyone, but not all naphthas are created equal.
Wasn't my point, simply stating that TruFuel is mostly naphtha and it's in the SDS sheets for their products. If you look at Stihl Motomix (made and packaged by Omni which owns TruFuel) the SDS states:
quote:
Naphtha (petroleum), full-range alkylated,
butane-contg.
So it's the light fraction (sat gas feedstock probably) petroleum naphtha which isn't very high octane (you're not using something with a MOR/RON in the 60's as an octane booster here), certainly nowhere near close enough for 2-stroke fuel, which is why I stated that TruFuel is basically naphtha with 2-stroke oil and an additive package.
Posted on 7/3/19 at 8:09 am to Clames
quote:
Wasn't my point, simply stating that TruFuel is mostly naphtha and it's in the SDS sheets for their products. If you look at Stihl Motomix (made and packaged by Omni which owns TruFuel) the SDS states:
Call it Alkylate petrol. Naptha is most comonly attributed to coleman fuel.
Posted on 7/3/19 at 8:11 am to sleepytime
quote:it is best to retune the carb if you're having issues but I don't understand what part of the 100ll would clog up a carb. Most 100ll is really 100 VLL now(very low lead).
I used 100ll gas years ago and stopped because it will clog up a carb quick with lead residue if you leave it in there for a few weeks in a hot environment. It’s best to retune the carb if you’re going to run it too.
I've seen the difference in our aircraft exhaust. Use to had a grey powdery substance at the exhaust tips now it's black.
Posted on 7/3/19 at 8:45 am to Bedhog
You guys are confusing me. 
Posted on 7/3/19 at 8:55 am to REB BEER
quote:
You guys are confusing me
Posted on 7/3/19 at 9:34 am to Bedhog
Now its even worse.
Posted on 7/3/19 at 9:38 am to REB BEER
Use non-ethanol gas and itl be cheaper and easier. 
Posted on 7/3/19 at 9:52 am to Bedhog
What's so wrong about quality non-ethanol gas with full synthetic oil mixed? Throw a little Stabil in during the winter. Never done me wrong and doesn't carry the price tag of these yuppy fuels y'all talking about.
Posted on 7/3/19 at 9:59 am to REB BEER
quote:
Now its even worse.
That's exactly what I was thinking.
Also, is there a difference between Trufuel, Echo Red Armor, VP Racing fuel and Husqvarna Pre Mix? Or is it all the same stuff, different can?
Posted on 7/3/19 at 10:44 am to TheBoo
quote:
Throw a little Stabil in during the winter
Dump the remaining gas out in the winter and start fresh. How much gas are you mixing to have to worry about it going bad? Buy a 1 or 2 gallon can if you dont use much.
Posted on 7/3/19 at 10:53 am to TheBoo
quote:gasoline will eventually turn into varnish when let sit. I like Alkylate fuel. Never turns to varnish.
What's so wrong about quality non-ethanol gas with full synthetic oil mixed? Throw a little Stabil in during the winter. Never done me wrong and doesn't carry the price tag of these yuppy fuels y'all talking about.
Posted on 7/3/19 at 11:26 am to Bedhog
Sorry baw but you sound like a baw who doesn’t know his shite
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