Messages 27 Reaction score 0 . The 100 is not the whole story though. Subsequently, question is, what color is jet fuel? This grade is generally available in most regions worldwide. Search: Avgas Density. Racing Gas vs. 100LL AvGas. Thanks for the info on avgas octane ratings and measurement. It has a high lead content and is dyed green. ALL aviation gasoline's act. 100LL has half the concentration of Lead found in 100/130 Avgas. This means you should be jetting up with Avgas, and be using more. I've read about airline pilots, flying radial engine aircraft, looking at the exhaust flames to lean the engines, looking for the yellow to blue color transition. Avgas remains the only transportation fuel in the United States to contain lead more than 222,600 registered piston-engine aircraft can operate on leaded avgas. What is the current price of Avgas 100LL? Premium Member. 130.0 Min. Find your nearest Avgas supplier Find your nearest Avgas supplier. What is the octane rating of Avgas? And for Bob PA. 100LL is the name. 3) "100LL is the equivalent of 99-100 MON. I probably use only 6 or 8 gallons of fuel per year in my . I. IdahoKartGuy1993 New member. And Avgas has a Specific Gravity of about 6.05, compared to say VPs 110 which is 7.30. Avgas grades are defined primarily by their octane rating. Sep 5, 2008. MON is a good place to start. An octane rating, or octane number, is a standard measure of the performance of an engine or aviation fuel. If you were to analyze it using the typical R+M/2 method (by which pump gas is scored), then it would likely come it at about 106 R+M/2 octane, give or take. Avgas 100/130 is a higher octane grade aviation gasoline, containing a maximum of 4 grams of lead per US gallon, maximum 1.12 grams/litre. This low lead fuel is dyed blue for easy visual check. Aviation Gasoline. It is an aviation fuel Specifically developed by the aviation industry for flight use. RON rating of a fuel can be closely associated with the engine design; the compression ratio. Grade 100LL has two milliliters of lead per gallon and is rated at 100 octane when the engine is leaned for cruise, and at 130 octane when the mixture is set at rich. So the higher octane in the 100LL provides a slower flame front. Avgas 100LL Price, 03 July 2022. X 1.0 or 2.0 the lead that was in gas in the 1970's. So do not be fooled by thinking it is low lead, it is not, it is actually high lead. Latest blog entry: Responsible fliers. I ran 100LL exclusively in my Rotax 532 for around 6 years (130 hrs). . According to GAMI, regarding octane rating, the new fuel "exceeded that of a corresponding ASTM D910 100LL," the industry standard for 100LL octane ratings. This aviation fuel can be further defined according to octane rating: Avgas 100 at standard lead level and 100LL at 'low lead' are the major types. In broad terms, fuels with a higher octane rating are used in high performance gasoline engines that require higher compression ratios. It must also be noted here that, the RON rating of the AVGAS 100LL is 110. These two differ over antioxidant content, oxidation stability requirements and max lead content. Never had a problem. The fuel is designated as "low lead" because the previous fuel with a 100/130 octane rating contained twice as much lead, four milliliters per gallon. (As in 115/145). Jan 22, 2010. General properties 4.1.1. . The autogas (MON) octane number is similar to the aviation rating of octane up to 100 octane, according to ASTM D. If it proves itself in the field, it will be the only approved aviation fuel to meet the needs of the entire piston fleet. Yes, we know the refineries and blenders add all kind of crap to boost the OCTANE rating, putting in butane is one of them. . 100LL MON = 103 MON (approx) 91 'Premium' Pump fuel with 10% ethanol = 88 MON (approx) 110 Race fuel typical = 105 MON (approx) Those would be much better numbers to use with the following formula to determine your mixed octane number relative to the BASELINE of typical 91 pump fuel. The increased octane rating also has no marked advantage for the operation of your engine." When using AVGAS 100LL for more than 30% of the time then Rotax suggest that the oil, oil filter, spark plugs & gearbox will need more maintenance than if using MOGAS or AVGAS UL91. It contains the least amount of lead of . All gas does, but Avgas even more so, because of the blend. In Colombia the fuel is available at most airports. And the 100LL has 2 grams/gallon lead in it (pump gas has no lead, ERC 110 race gas has 3 . I would request that you also include test results from using 100LL on engines that were initially rated for 80/87 . I guess that is due to the octane rating which slows the combustion. When used in a motor vehicle this fuel will leave a lot of lead deposits in the motor. In broad terms, fuels with a higher octane rating are used in high performance gasoline engines that require higher compression ratios. Also some parafinics like octane ( which is 100 octane ). From literature, I found that, the . High Octane Unleaded Avgas (Presented at Oshkosh, July 28, 2021) In 2010, GAMI made a promise to undertake . Key points: -100LL is not 100 octane as we rate it for pump gas (R+M/2). Argonne National Laboratory has conducted life-cycle analysis of bio-based aviation fuel pathways and compared them with petroleum-based jet fuels (see Figure 5 As a potential application, it can be used as an additive to improve the volumetric calorific values of conventional biojet fuels We will continue to supply Avgas 100LL until a suitable alternative is found Jet . In the past other grades were also available, particularly for military use, such as avgas 115/145 and 91/96. The most common and reliable type of avgas is 100 octane Low Lead, also . Feb 1, 2006 5,270 1,386 113 Castle Rock, CO. Feb 7, 2012 #7 Schmeg said: I'm a flatlander out east just wondering what the general consensus on running avgas, or cut avgas (100LL) in 2 stroke sleds is. It contains the least amount of lead of . Vehicle: 2004 WRX STi. It is a true 100 Motor Octane rating (which, by the way, when measured via pump gas "R+M/2," tests greater than 100 octane). Aviation Gasoline 100LL has been approved by the major aircraft engine manufacturers for use in aircraft engines originally designed for operation on the following grades: 80/87, 100/130, and the discontinued 91/98. I want to know how it compares to 93 pump gas . Motor Method Octane: 99.6 Min. The rating is 100 for a lean mixture, 130 for a rich mixture. 130.0 Min. I was driving a 1959 C-172 with O . Av LL 110 gas is Low lead by Aviation standards only, it actually has approx. 100LL - This grade of aviation fuel has a lower lead percentage than 100/130. General Aviation Modifications, Inc. GAMI now has an STC for their unleaded AVGAS, which meets all the octane requirements of 100LL, including the 99.5 MON minimum, along with a matching RVP of 7psi. Interestingly, 100LL is said to have a MON of 100 (99.5 minimum) , an RON of 103.2 and an AKI of 101.5. If its good enough for airplanes, it's good enough for sleds. For the old "purple" gas, it was 145. Almost all piston aviation engines use 100LL, but it will soon be phased out because of high levels of toxic lead. For compar. Basically that is why the 130 octane rating. Aviation gasoline AVGAS 100LL is a high octane mixture of hydrocarbons prepared by the processing of crude oil. 100LL has a minimum MON of 99.6. 5.2 Grades 100 and 100LL represent two aviation gasolines identical in anti-knock quality but differing in maximum lead content and color. Many people do not realize that the octane rating of a fuel is not a physical property of the fuel, like specific gravity or pour point. . Right Monty, even Alcor TCP supports your statement. Only show this user . Add a shitload of lead to the worst fuel in the world and it will break records in the octane world. Avgas 100/130 (in this case the lean mixture performance rating is 100 and the rich mixture rating is 130). An octane rating, or octane number, is . It is a much, much better choice of fuel than what we have available at the pump here in California (91 octane Research+Motor/2). Total and complete different octane ratings. The big difference among these two is the amount of Tetra Ethyl Lead, which has a significant toxicity. It is excellent for use in piston engine powered private, commercial and military training aircraft. And the "octane rating" of avgas goes up as the mixture gets richer. NOTE2Listing of and requirements for Avgas Grades 91/96, 108/135 and 115/145 appeared in the 1967 version of this specication. TCP makes a difference. General Aviation Modifications, Inc. The increased octane rating also has no marked advantage for the operation of your engine." When using AVGAS 100LL for more than 30% of the time then Rotax suggest that the oil, oil filter, spark plugs & gearbox will need more maintenance than if using MOGAS or AVGAS UL91. All equipment and facilities handling avgas are color coded and prominently display the API markings denoting the grade carried. We provide both a 110 octane high performance fuel in an ethanol or non-ethanol blended versions Sunoco has fueled more than 15 I used to go there every week with my Evo , i was tuned for 100 with 38 pounds of boost You provide your own container Higher blends of ethanol, such . . General Aviation Modifications, Inc. Or any . AvGas LL100 stands for "Low Lead 100 Octane". " - Agreed 4) "MOR and ROM as stated in your link are not ASTM terms AFAIK." MOR (Motor Octane Rating) = MON (Motor Octane Number) Grade 100LL - 100LL is the low lead version of Avgas 100. 100LL AvGas In California Originally Posted by . And because it is fully fungible with 100LL, the transition for aircraft owners and FBOs should be easy. 100 MON avgas (100LL). It seems the G100UL contains the same components of normal aviation gasoline, in somewhat different proportions. Most all airplanes have built in water seperators for condensation issues as these issues can happen while in flight. Generally AvGas is a higher quality fuel than pump fuel, but maybe not higher Q than some particular race fuel. below the table is an A Test Protocol for Collecting Thermal Data From Aviation Fuel Fires Involving Large Aircraft Mockups Wind conditions present a specific challenge when fighting fuel fires Speed of Sound in Static Liquid Calculator COMMON GASES CONVERSION TABLE To Use This Worksheet: 1 This is crucial because the weight of fuel for an aircraft is an important . Supercharge Rating Performance No. Avgas is 100 octane Low Lead. My question was how does it cause vapor lock. TBH There are two major specifications for Avgas 100: the ASTM D910 and UK DEF STAN 91-090. There are mainly two grades of avgas used in general aviation community: Grade 100 - This grade is 100/130. to answer the original poster, is Avgas 100LL ok for use in an RC engine. 100LL (Low Lead) and 100/130 have the same octane rating. The octane ratings of AVGAS, a gasoline-based fuel, are usually either 91 or 100 (lean mixture) and 96 or 130 (rich mixture). . For example the Shell V power type of fuel. . It also is alright to use in dirt bikes that are rebuilt frequently, because the build-up of lead is not a problem. I have a 1980 Moto Morini that will only run well on higher octane fuel. Colour: Green: Blue: 10% Distillation, % at C: 75 Max. Also the lead in AVgas helps to dissipate heat and acts as a lubricant. It was a good price as it was the ex daily test samples. Warter Fuels JSC Aviation Gasoline AVGAS 100LL Edition VIII 1/6 1. Proper use and storage of aviation fuel will ensure chemical stability of the product Download . The minimum AKI of UL94, as sold by Swift Fuels, is 98.0. The (MON) number is typically 8 to 10 octane numbers lower than the (RON) number. Mogas and avgas are very similar ; the difference is in ratio of high octane to lower octane components . Very Yellow. Defence Standard 91-090 / ASTM D7547 Colour: colourless Knock rating Motor Octane Number, MON Min 91.0 Research Octane Number, RON Min 95.0* *Defence Standard 91-090 . Their specifications are identical in all . JMO The early unleaded mogas was nice to mix 50-50 with 100LL avgas where we would come up with the same lead content of the 80 octane avgas no longer produced. Thanks for that information. 100LL has a high lead content (0.5 grams per litre), even higher than leaded race fuels. 100LL is what took its place and has far less lead. #10. Avgas 100 / Avgas 100LL Product Description Avgas 100 and Avgas 100LL (the "LL" indicating low-lead) are the principal grades of aviation gasoline in use today. The ASTM spec is 130 for 100LL for the ASTM D909 supercharge rating. Requirements and research 4.1. Two ratings are applied to aviation gasolines (the lean mixture rating and the rich mixture rating) which results in a multiple numbering system e.g. 100 is R+M method of octane rating. The lean mixture octane rating is 100 and the rich mixture rating octane is 130. Because of the high cost of unleaded, high-octane avgas, and possible increased range before refueling, some general aviation pilots attempt to save money by tuning . That's actually a LOT of lead, but it's called Low Lead for comparison with previous 130/150 octane aviation gasoline which had up to about 1.3 gm per litre. This grade of avgas satisfies the requirements of all piston engines using avgas, regardless of their performance . Av-gas 80/87 - Because of its low octane rating, it can only be used in low compression ratio engines. Answer (1 of 4): Avgas is 100 octane Low Lead. 100LL - This grade of aviation fuel has a lower lead percentage than 100/130. These . A simple average of the octane ratings for 100LL and pump gas are not likely to give you an accurate number for the mix. -Quality and consistency is better than pump -Shelf life is better than pump. Approximately the same as most 110-112 octane race fuels. The way the octane rating is calculated for automotive/race gas is not the same calculation, so the MON rating for AV gas could be a lot lower than . Braly said the price of the new fuel will be "60-85 cents/gallon more than 100LL as the fuel leaves the producer's facility and begins to enter the stream of commerce." . Using 'Avgas 100/130' as an example, the lean mixture performance rating is 100 and the rich mixture rating is 130. Predator 212 Running AvGas 100LL. Alcor has the measuring syringe graduated for 80 Octane proportions. AvGas is suitable for certain engines, namely ones that do not contain oxygen sensors or catalytic converters. . 100LL Avgas UL91 Mogas Grade 80 without lead fouling Aviation storage stability . New Hampshire. Using the R . Ran 100ll in 310 Apex and 240 Nytros. The most commonly used current fuel, 100LL, has an aviation lean rating of 100 octane, and an aviation rich rating of 130. Thread starter IdahoKartGuy1993; Start date Jul 4, 2018; Status Not open for further replies. It should be pointed out that in Europe and most of the world, gasoline octane rating is the Research Octane Number, not (RON+MON)/2 used in the US. So it's the 100-octane rating of G100UL that makes it special. So when your 3W manual calls for 98RON fuel, American 93 octane super unleaded is the correct fuel to be using. 100LL AV Gas has 4.2grams of Tetryl Ethyl Lead TEL. TEL (Tetra-ethyl-lead) is added to raise the octane. The Lean Mixture rating is 100 octane (15 octane higher than the comparable 85 MON for unleaded Mogas) . I probably ran at a higher cruise RPM than most due to the gross weight of the man & machine. Avgas 100LL is dyed blue. It has a high lead content and is dyed green. The higher octane of AVgas makes the fuel burn slower and more efficiently. So, with the fact that Swift UL94 is the same as 100LL without the lead, it would be safe to guess that the RON is only slightly higher, and the AKI is also only slightly higher. Aviation Gasoline 100LL has been approved by the major aircraft engine manufacturers for use in aircraft engines originally designed for operation on the following grades: 80/87, 100/130 and the discontinued 91/98. NOTE: 100LL is commonly tried and used as race fuel. High Octane Unleaded Avgas (Presented at Oshkosh, July 28, 2021) In 2010, GAMI made a promise to undertake . Somebody told me that using 100 low-lead aviation gas is better (higher octane and burns cooler) than say Union 76 racin' gas. The higher the octane number, the more compression the fuel can withstand before detonating (igniting). Interesting read for avid uneducated tinkerers like my self.