Drat, I thought I caught that British-ism! Fixed it!
Non Ethanol Gas (Boat)
- Thread starter skeeter2010
- Start date
srt20
Active member
Avgas? Any preference? (This thread isn't long enough!)
Note #1:
Grade
Color
Lead (g/L)
Additives
Uses
Availability
80/87
("avgas 80")
red
0.14
TEL
It was used in engines with low compression ratio.
Phased out in the late 20th century. Its availability is very limited.
82UL
purple
0
ASTM D6227; similar to automobile gasoline but without automotive additives
(Note #1)
85UL
none
0
oxygenate-free
(Note #2)
91/96
brown
almost negligible
TEL
Made particularly for military use.
91/96UL
none
0
ethanol-free, antioxidant and antistatic additives; ASTM D7547
(Note #3)
(Note #4)
B91/115
green
1.60
TEL; see standard GOST 1012-72.
(Note #5)
(Note #6)
100LL
blue
0.56
TEL As of January 2010, 100LL has 1.2 to 2 grams TEL per US gallon.
Most commonly used aviation gasoline.
Pretty much worldwide
100/130
green
1.12
TEL
Mostly replaced by 100LL.
(Note #7)
G100UL
none
0
aromatic compounds such as xylene or mesitylene
Composed primarily of aviation alkylate (same as used for 100LL).
As of August 2013, limited quantities are produced for testing.
100SF
none
0
mesitylene
Swift Fuels LLC blend of 83% mesitylene, 17% isopentane
Limited quantities are produced for testing.
115/145
("avgas 115")
purple
1.29
TEL
Originally used as primary fuel for the largest, boost-supercharged radial engines needing this fuel's anti-detonation properties.
Limited batches are produced for special events such as unlimited air races.
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As of 2008, 82UL is not being produced and no refiner has announced plans to put it into production.
Note #2:
Used to power piston-engine ultralight aircraft.
Motor Octane Number min 85. Research Octane Number min 95.
Note #3:
In 1991, Hjelmco Oil introduced unleaded avgas 91/96UL (also meeting leaded grade 91/98 standard ASTM D910 with the exception of transparent color) and no lead in Sweden. Engine manufacturers Teledyne Continental Motors, Textron Lycoming, Rotax, and radial engine manufacturer Kalisz have cleared the Hjelmco avgas 91/96UL which in practice means that the fuel can be used in more than 90% of the piston aircraft fleet worldwide. May be used in Rotax engines, and Lycoming engines per SI1070R.
Note #4:
In November 2010, the European Aviation Safety Agency (EASA) based on about 20 years of trouble-free operations with unleaded avgas 91/96UL produced by Hjelmco Oil cleared this fuel for all aircraft where the aircraft engine manufacturer has approved this fuel.
Note #5:
Specially formulated for Shvetsov ASh-62 and Ivchenko AI-14 – nine-cylinder, air-cooled, radial aircraft engines.
Note #6:
The Commonwealth of Independent States, produced exclusively by OBR PR.
Note #7:
As of August 2013, Australia, New Zealand, Chile, and the states of Hawaii and Utah in the United States.
100LL. Its about 105 true octane.
1flatlander2
Member
(R1+R2)/2. 100gallons*75octane+however many gallons*93 octane /2
I must be doing it wrong? I'm coming up with 12150 octane if I add 100 gallons of 93? Lol.
srt20
Active member
84 octane.
Assuming the current fuel is 75 octane. And assuming there is 100 gal in tank. And assuming capacity is 200 gal. Using 100ll av gas with 100oct just to even, though its closer to 105oct.
75oct+100gal=7500
100oct+100gal=10000
17500/200gal=87.5 octane
75oct+100=7500
105oct+100=10500
18000/200=90 octane
Lake County
Member
Don't forget about our favorite word on this site.....UP
Phenomenal "2" letter word.
I'm sure you will enjoy this.
UP
Read until the end. You'll laugh!
This two-letter word in English has more meanings than any other two-letter word, and that word is UP. It is listed in the dictionary as an [adv], [prep], [adj], [n] or [v].
It's easy to understand UP, meaning toward the sky or at the top of the list, but when we awaken in the morning, why do we wake UP?
At a meeting, why does a topic come UP? Why do we speak UP, and why are the officers UP for election (if there is a tie, it is a toss UP) and why is it UP to the secretary to write UP a report? We call UP our friends, brighten UP a room, polish UP the silver, warm UP the leftovers and clean UP the kitchen. We lock UP the house and fix UP the old car.
At other times, this little word has real special meaning. People stir UP trouble, line UP for tickets, work UP an appetite, and think UP excuses.
To be dressed is one thing but to be dressed UP is special.
And this UP is confusing: A drain must be opened UP because it is blocked UP.
We open UP a store in the morning but we close it UP at night. We seem to be pretty mixed UP about UP !
To be knowledgeable about the proper uses of UP, look UP the word UP in the dictionary. In a desk-sized dictionary, it takes UP almost 1/4 of the page and can add UP to about thirty definitions.
If you are UP to it, you might try building UP a list of the many ways UP is used. It will take UP a lot of your time, but if you don't give UP, you may wind UP with (UP to) a hundred or more.
When it threatens to rain, we say it is clouding UP. When the sun comes out, we say it is clearing UP. When it rains, it soaks UP the earth. When it does not rain for awhile, things dry UP. One could go on and on, but I'll wrap it UP, for now. My time is UP!
Oh! One more thing: What is the first thing you do in the morning and the last thing you do at night?
U
P !
Did that one crack you UP?
Don't screw UP...send this on to friends you look UP in your address book . . .or not . . . it's UP to you.
UP to no good so now I'll shut UP!
snobuilder
Well-known member
Did you mean to say Yoop?..
U, P. Is every 4 hours at my age....LOL.
FRNASH still didn't answer my question about the W in wreck.
U, P. Is every 4 hours at my age....LOL.
FRNASH still didn't answer my question about the W in wreck.