Mogas aircraft engines

Mogas aircraft engines. Pale oil is between kerosene and diesel. When the airfield's MOGAS supply shut the group changed to AVGAS exclusively. The Racine, Wisconsin-based company has recently completed advanced simulation analysis of a new, hydrogen-fueled variant of its engine. Jul 13, 2015 · If you’re interested in INPULSE, consider the following: You’ll be burning fuel at half the cost of avgas. May 4, 2004 · A large proportion of low-compression aircraft engines from both Lycoming and Continental were originally certificated for operation on 80/87 octane aviation gas. Nov 9, 2023 · NOx Standards. Image courtesy of GAMI. Developed from. In mogass favor is the ever-growing number of Rotax engines that can burn it, as many owners of those aircraft do. ‘Hoping for the best’ and using E10 fuel in your aircraft regardless could risk ruining the fuel system components, fibreglass tanks falling to bits, engine failure through contamination of the fuel or ruptured fuel pump diaphragms etc, or more serious engine damage May 10, 2021 · The Catch-22 of unleaded avgas. In conclusion - E10 is presently not approved for use in any LAA aircraft. . This heavy duty engine is the perfect all-rounder. Engines / Powerplants. Ethanol is incompatible with many components in aircraft fuel systems. May 10, 2018 · An increasing amount of aircraft is approved for operation with specific commercially available types of automotive gasoline (MOGAS). Aviation fuel suppliers are often portrayed as the bad guys due to our Jul 27, 2021 · GAMI's G100UL is amber and appears green when mixed with blue avgas. May 18, 2022 · An aircraft’s fuel system must be capable of providing a consistent delivery of fuel at the flow rate and pressure established by the manufacturer to ensure proper engine functioning under likely operating conditions. ROTALK is a web based support system which provides a common access point for locating key Information - Education - Support for their Rotax Aircraft Engines such as the Rotax 912, Rotax 914, Rotax 912 iS, Rotax 915 iS, Rotax 503 and Rotax 582. Unleaded fueled engines if tuned correctly, generally run cleaner. Unlike motor gasoline, which has been The UND announcement was shocking because virtually all previous tests of FAA-authorized unleaded avgas—both Swift UL94 and GAMI G100UL—seemed to indicate that the effects of operating piston aircraft engines on these fuels was all positive with no negatives. Jun 23, 2010 · Any opinions on MoGas is a IO-360 A1A? Maybe blending with AvGas? Perhaps premium car gasoline? Most major aircraft engine manufacturers (other than a few whose engines have been developed from car engines) have aligned themselves with the oil industry and have refused to obtain approval for the use of MOGAS in their engines. Mogas has ethanol in it now over here and is variable in volume of ethanol. May 1, 2018 · Mogas has been an alternative to leaded fuel since 1964 when Experimental Aircraft Association (EAA) began testing on it. The O-235 was installed in many aircraft and is a very popular engine with a 2400 hour to be overhauled (TBO) and 115 to 135 hp. To qualify, the aircraft must be approved for operating 80/87 fuel. The specifications of these certified or approved types of MOGAS have to be prescribed by the (S)TC-holder in the approved aircraft documentation (e. MOGAS. The DF70 is a high-performance 4-stroke twin-cylinder UAV engine designed to military specifications for the aerospace market. 73 per, plus it is the right fuel for the Rotax engines, zero lead. As the first engines in the UL260 version were a success, we tried to increase the power of our engines. Would there be any extra risks besides probably engine warranty? Discover Hummel Engines, the reliable and affordable VW conversions for homebuilt and light sport aircraft. Topics included propellers and speed-reduction units, cooling and lubrication systems. With the thousands of Rotax powered aircraft, one would think that we could lobby the database keepers to differentiate between Mogas and premium Mogas. With Thunderbolt engines, customers get a genuine Lycoming engine that is factory built, factory tested and factory supported - with several popular options of fuel systems, ignition systems, performance enhancements and finishing options. Aug 14, 2011 · Two terms are used repeatedly throughout this series: “pump gas” and “mogas. 912 iS Sport | iSc Sport 100 HP. An AOPA consultant said the move signals the FAA's "bullish" approach to the eventual elimination of leaded aviation fuel. Over the long haul, when the manufacturing of MOGAS surpasses that of AVGAS, it will be commonly supplied for utilization in aircrafts, running This 5. Thanks to sophisticated engine control units and knock detection, ever fewer modern cars require high-octane fuel. This is why they are less common. Suitable for both VTOL and fixed-wing unmanned aircraft, the engine offers superior fuel economy, quiet running and excellent starting reliability. Corsair replacement engines for piston-powered general aviation aircraft incorporate modified aluminum V8 engine blocks and modified components. This includes any manoeuvre which forms part of the aircraft’s certification envelope. You’ll save up to $45/hr/engine, and on a single engine airplane expect to save $45,000 every thousand hours. Thus, an understanding of vapour handling ability of small aircraft is essential to establish Oct 5, 2013 · Im guessing a buck more, so the Delta between mogas and avgas could rise to $2 or more. Swiftfuel UL94 does not require an STC for grade 80 aircraft and engines. Dec 3, 2015 · MOGAS fuel ensures P2010 flyers will benefit from cost effective operation and produce significantly lead free emissions. They have more stringent requirements Apr 16, 2009 · Testing For Ethanol. Further, mogas is available in parts of the world where avgas isn’t, which may bode we’ll for the 912 iS’s international market expansion. #32. Nov 11, 2004 · KITPLANES Magazine, August 2001Auto Engines for Aircraft Part 2 of an engineering perspective on these popular conversions. With all aircraft using mogas, the engine log must contain a complete record of all hours on mogas, including a record of fuel mixtures (avgas and mogas); the aircraft Journey Log shall be annotated “Mogas may be used based on the acceptance of TP 10737”. Jul 18, 2011 · The list of engines and airframes approved for mogas is long and likely to grow modestly. By Ben Visser · May 10, 2021 ·. Indeed, Teledyne Continental Motors (TCM) explicitly states that using mogas voids their warranty on new engines and parts. maybe an option for Jabiru's running on mogas. Oct 1, 2021 · Lead is a component that helps boost the octane level of avgas to 100, which provides the detonation margins required by the larger engines. Aircraft engines, naturally, have been left behind, stranded on their own little island of octane neediness. Four-stroke piston engine with four liquid- and air-cooled cylinders. 's 100-octane unleaded avgas that, when combined with approvals announced in July, account for about 70 percent of the GA aircraft fleet's powerplants. Were aware of two basic testing methods. Google MMO msds and you may decide to keep that out of your engines also. MOGAS - Corsairpower. Aug 1, 2020 · The problem is not just finding mogas, it is that Rotax engines require premium fuel. An airplane averaging 15 gallons per hour, at a savings of only 50 cents per gallon will cost $7. The Lycoming IO-390 engine is a horizontally opposed, four-cylinder aircraft engine, manufactured by Lycoming Engines. We continue to receive a number of questions regarding the use of automobile gas in aircraft engines. Nov 25, 2023 · DeltaHawk Engines, which received certification in May 2023 for its jet-fueled piston engine for general aviation aircraft, has embarked on a new venture. Engines such as JABIRU and Lycoming have the capability to run on both types of gasolines. You can look up the msds for these products. We also created our UL350IHPS which is meant for helicopters and gyrocopters. Nov 15, 2021 · Mogas is not typically available in large quantities at most municipal airports in the United States. Ponk 180 Cessna's out there flying . The aircraft owner/operator is responsible for the grade of fuel used in their aircraft. Corsair engines cut the harmful tailpipe and noise emissions while reducing operating Nov 19, 2018 · Aero-engines burning mogas stay cleaner than aero-engines burning 100LL: Lead salts emulsify into sludge that collect in oil galleries. Some light aircraft are approved to use Unleaded Petrol, sometimes called “Mogas,” conforming to EN 228, as amended. Ponk 470-50 engines but it was not done to the level of additional paperwork . And so the perverse problem of finding a replacement for leaded 100-octane avgas. Apr 9, 2009 · I think Steve Knopp tried to get mogas approved for his P. Our truly modern engines feature dual electronic ignition (with variable timing), excellent power-to-weight ratio, and high 914 UL | F. Engines run at a specific level of compression. Therefore, approval to operate on Mogas is required for both the aircraft and engine. Dec 17, 2019 · The fuel injected Lycoming I0-540-AE1A5 in the R44 II allows 100 unleaded. Since ethanols presence in mogas is bad for aircraft engines and fuel systems and since its likely to increase before alternative aviation fuels or mogas oxygenates are developed and widely distributed, you need an easy method to test fuel samples. ”. UL390. 35, but when mogas versus Jet-A or diesel prices are factored, the fuel operating costs for these engines are more comparable. “These tests have demonstrated DeltaHawk’s highly Avgas ( aviation gasoline, also known as aviation spirit in the UK) is an aviation fuel used in aircraft with spark-ignited internal combustion engines. 70 cc Multi-Fuel 4-Stroke Engine. It mostly screws up valve stems and guides, and fouls plugs. An aviation fuel truck. Low-weight engine with excellent performance at high altitudes. The bulletin seems to say that any aircraft or engine certified for either 80/87 avgas or 91/96 avgas is perfectly safe and legal to use grade UL94 Auto Fuel STC. I ran my previous Jabiru 3300 exclusively on Mogas (Euro-95) without ill effects. The TECNAM SMP is based on the revolutionary aircraft TECNAM P2006T, the only twin engine aircraft that can fully match all the today special missions’ purposes due to its characteristics. Available for Single Engine, Twin Engine, and Special Mission Aircraft. EPA adopted emission standards and related provisions for aircraft gas turbine engines with rated thrusts greater than 26. 15 inch wider in comparison with the UL260), we succeeded to increase power up to 130 hp. I briefly switched to 100LL but had substantial problems with Pb fouling despite ultra-aggressive leaning. Oct 1, 2020 · When it comes to piston aircraft engines, the role of engine oil is complicated. The problem with the 100LL-Avgas for the Rotax engine is that it has lots of lead. Last year after local authorities upped the Euro-95 ethanol content to 10% I started to notice rough running in some situations. “In achieving this milestone, the Tecnam P2010 becomes the first known OEM fixed-wing aircraft fully approved by the manufacturer to use each and every fuel listed in our SI1070 Approved Fuels document Dec 30, 2020 · The result is commendable fuel economy on mogas, immunity to shock cooling and potentially better engine life and power. You’ll be able to run your airplane on avgas or mogas (legally) for the rest of your life. These features greatly increase aircraft performance, and allow the use of multiple fuel types. Thanks to a slightly bigger design (+8 cm / 3. If mogas is available, it is crucial to ensure ethanol, a common additive, is not present in the fuel. When most current piston aircraft engines were designed and certified in the 1950’s, lead was still a normal May 29, 2018 · The engine manufacturers are unanimous that auto fuel should not be used in engines originally certificated for avgas. What is wrong with us in the US? May 16, 2014 · In the world of internal combustion engines, technology has declared war on octane. Most Lycoming O-235, O-290 and O-320 engines fall in this category, and so do some of the larger O-360 and O-540 engines. 8 According to this bulletin, approximately one-third of Lycomingâ s roughly 200 engine model variants can use unleaded avgas that meets ASTM D7547. “This STC is a positive step as we seek a fleetwide solution for an FAA approved unleaded fuel,” said AOPA President Mark Baker in a joint industry statement issued by AOPA, the Experimental Aircraft Association, and the General Aviation Enjoy the following benefits when you install an Auto Fuel STC on your aircraft: Significant savings on fuel The price difference between auto fuel (mogas) and aviation fuel (avgas) is significant. Look at the lead sludge that collects in the crank nose bore of a constant speed engine. RV aircraft are designed to use Lycoming aircraft engines, with the exception of the RV-12 and RV-12iS Light-Sport Aircraft models, which leverage the Rotax 912 series of engines. They seem to offer somewhat better power or performance depending on the application due to either higher engine output or propeller gearing. Apr 9, 2012 · It is 20p per litre cheaper than 100ll selling at about £1. May 10, 2022 · "If the aircraft is filled with auto gas containing ethanol and the airplane just sits, you are setting yourself up for engine failure," Petersen explains. Rotax calls it “leaded gas”. Lycoming IO-580. Trucks carry the necessary hoses and pumping equipment, but no fuel. Oct 28, 2021 · The FAA has approved approximately 611 more engine models to burn General Aviation Modifications Inc. Dec 1, 2020 · However, in general, the modern aviation society has approved and acknowledged MOGAS to develop into a renewable energy for “low compression low octane rated piston powered aircraft engine”. g. “Mogas,” as he defines it, refers specifically to a fuel that Here you go: It is common knowledge that Rotax 912 engines like Autogas/Mogas better than 100LL Avgas. 7 kilonewtons. At some airports, underground fuel pipes allow refueling without the need for tank trucks. EMS and propeller speed reduction gearbox. I bought the Petersen STC for mogas, ran a steady diet of Mogas (80/87) except for the occasional tank on the road where mogas was not available. 5/1. However, the Petersen STC does not allow mogas to contain ethanol, which is a common mogas additive. But, precludes MoGas 91. CORSAIR POWER. "The seals and gaskets can be damaged Oct 15, 2002 · Some years ago our group used to regularly use MOGAS (the old MOGAS) in our A65 engine. These engines will power up even your 4 seats plane. ‬Weight‭ ‬naturally rises to 260‭ ‬pounds‭, ‬but either 100LL or mogas can still be run‭. ” “Pump gas” refers specifically to fuel that conforms to the ASTM D4814 or Euronorm 228 specifications for automotive fuel and is available for retail purchase at automobile filling stations. After a while, it was noticed that all the previous engine problems had disappeared. The EAA type certificate program resulted in an FAA Supplemental Type Certificate Jan 25, 2018 · The actual question concerns how much 100LL should be added to 87 R+M/2 mogas to satisfy the anti-knock requirements of a 91/96 octane certified aircraft engine. If you look at a periodic table, most elements are identified by the first letter of the name. R44 II POH Section 2 Limitations: If you fly a lot and can get good consistent MoGas with the engine/airframe approvals, MoGas does have successful ops. The only issue was occasional vapor lock on a quick turn. In addition, decades of experience using 91-octane premium unleaded automotive While most engines can run satisfactorily on unleaded, our aircraft engines need lead at least during the break in process unless new spec hardened parts have been installed. Octane rating itself measures how resistant the fuel is to detonation. Dec 20, 2023 · Interestingly, E0 mogas is available at most GA airfields I visit when travelling in Europe. ’s G100UL 100-octane unleaded avgas in all general aviation piston aircraft. It was necessary to run the higher compression IO-520 engine on 80/87, and even then, way "over square" to get it to detonate during the testing. Turbocharger. ‬Naturally this gives a fat low-end torque curve‭, ‬also augmented‭ ‬by the gearbox and Honda’s gasoline direct injection‭. Lycoming IO-360. However, in order for mogas to be used in aircraft engines and air frame Feb 19, 2008 · It has been running on unleaded and 10% avgas for years with out any problems. Sep 30, 2013 · The debate about using mogas in aircraft has been around my entire aviation career. Feb 19, 2008 · It has been running on unleaded and 10% avgas for years with out any problems. Engines. 4. 100LL fuel is four times the lead content of auto gas/mogas. In a first for the aviation industry, the FAA has approved supplemental type certificates (STCs) for the use of General Aviation Modifications Inc. Dec 15, 2020 · The engine manufacturers are unanimous that auto fuel should not be used in engines originally certificated for avgas. “We can confirm that PAFI […] So, although an aircraft may be able to operate on Mogas, other aircraft components have to be considered because of the potential for vapour lock within the fuel system, as well as potential adverse effects on seals and components. These engines are used primarily on commercial passenger and freight aircraft. The RV-4 and RV-6/6A use 150/160 hp 0-320 or 180 hp 0-360 engines. Feb 14, 2024 · The EAGLE team’s goal is to eliminate leaded aviation fuels in piston-engine aircraft safely by the end of 2030. What is needed is a small diesel in the 100hp range as an alternative to the O-200 and Rotax, itself perhaps the most advanced engine powered with plentiful mogas. Mar 24, 2023 · I ran an O-320 E3D on mogas for 1000 hours. Then Thielert became insolvent, and China’s AVIC acquired the rights to these engines. Jul 21, 2020 · Piston aircraft engines commonly operate on aviation gasoline (AVGAS) and motor gasoline (MOGAS). Nov 6, 2019 · Unleaded high-octane fuels do exist for aircraft engines, but those engines have to be certified to use those fuels, a long and expensive process. Avgas and jet fuel are formulated for the specific operating conditions and engine performance demands associated with aviation. Four-stroke piston engine with four liquid and air-cooled cylinders. Sep 1, 2022 · 85. 50 per hour less to operate than when using avgas. The pilot sustained minor blunt force injuries but then became hypothermic and drowned. Automatic wastegate control. This time we conclude […] May 18, 2016 · Thunderbolt engines are Lycoming's brand of high performance, built-to-order power plants for Experimental aircraft. The Lycoming engines are horizontally opposed 4 cylinder 4 stroke engines. ” Jul 17, 2013 · Diesel engines from SMA, Thielert and Austro do a bit better than this at 0. Jan 5, 2008 · That makes Mogas a safe bet for low compression aircraft engine use from an octane standpoint. The requirements were previously adopted by the International Civil Aviation Organization (ICAO). The Rotax engine was designed and built for unleaded gas or mogas-Autogas. The RV-7/7A and RV-8/8A can accommodate O-320, parallel valve IO/O-360 (180 Aug 19, 2020 · For any certificated aircraft engine, the type certificate will specify the required fuel. With a capacity of 70cc and a power Jul 21, 2020 · Piston aircraft engines commonly operate on aviation gasoline (AVGAS) and motor gasoline (MOGAS). Yet supply and distribution remain a problem. In 2014 the first 6 cylinder engines were developed. My current CAMit 3300 has 150 hours on it with Mogas as well. Dec 1, 2021 · The risk of vapour lock, that would be the formation of vapor bubbles inside within fuel system leading to an disability of gasoline motion within the engine, is perfectly recorded especially through researches on aircraft making use of MOGAS [16]. In Germany, Thielert Aircraft Engines GmbH developed a Centurion line of aircraft engines that borrowed heavily from Mercedes-Benz automotive diesels. ASTM D-439/D-4814/EN228 Auto fuel STCs were developed using fuel blended to ASTM specification D-439. Compression of 7 to 1 is OK for mogas or it's replacement. Mar 30, 2019 · MOGAS was a excellent alternative to 100LL as it was cheaper and the aircraft engines that only required a lower octane operated more efficiently. Dec 26, 2019 · Viking’s top offering is the 170-hp version of the Honda Civic engine‭. AVGAS VS. If the TC specifies AVGAS, using MOGAS will require an STC for that engine. The aircraft used to fly ok, but there were frequent problems with sticking valves etc. Minimum of 91 octane. Tecnam Aircraft: Quality Aircraft Since 1948. No lead needed for either engine. There is a service letter or bulletin against using higher compression pistons in the P. I’m a pilot and love all things aviation, but after 25 years working as an aviation fuel supplier, I have some real concerns about the use of automotive motor gasoline (mogas) in aircraft. Even some relatively high-performance aircraft such as some Bonanza models and Cessna 182s are approved for automotive fuel. On the other hand, the Experimental Aircraft Association (EAA) says that it's perfectly safe. GAMI co-founder George Braly stated that the fuel will initially be produced in small batches while the If you want more power and mogas 97/ 98 is available, the UL390iS is an excellent choice for your 2 or 4 seats plane. Ponk Lycoming Engines started in 1907 and has been one of the most common aircraft engines with a wide support network and parts availability. Dec 2, 2010 · Is it possible to use MoGas in a 182 pponk? Hypothetically of course. This information may likely be more than you need to know, but should answer most questions. Perfected 4-stroke engine with full take-off power and engine management system. If it sloughs off, it can clog oil galleries. Avgas is distinguished from conventional gasoline (petrol) used in motor vehicles, which is termed mogas (motor gasoline) in an aviation context. These fuels are all different in the types of engines they are designed for and the combustion and Jul 1, 2022 · In 2016, the FAA sought to clarify the requirements by issuing a Special Airworthiness Information Bulletin (SAIB) HQ-16-05, now in revision 1, “Fuel– Grade UL94 Unleaded Aviation Gasoline. Aviation fuels are petroleum -based fuels, or petroleum and synthetic fuel blends, used to power aircraft. The type and grade of fuel used must Jan 30, 2015 · 87UL/E0 (similar fuels are called 82UL or 85UL) -- This is a tightly specified form of motor gasoline (mogas) -- without any ethanol or oxygenates in it, as many aircraft fuel systems aren't compatible with ethanol -- that is used in low-compression aviation piston engines mounted in airframes certified or STCed for operation on motor gasoline. flight manual). Jul 5, 2017. Avgas, auto fuel, and diesel are designed for piston engines, whereas jet fuel is designed for turbine engines. Minimize the safety and technical impacts associated with high-performance engines using unleaded fuels. [1] [2] There is no carburetted version of the engine, which would have been designated O-390 and therefore the base model is the IO-390. I am planning to start running non ethanol mogas in my O-540 8. Aviation fuel. Specifications Performance Dimensions & weights Fuel consumption Price & options Service bulletins Manuals. To PB or not to PB, that is the question: Whether ’tis nobler to endure the pings and knock of inadequate octane in our airplanes’ engines or to rise up and add lead to suppress them. A pilot ditched a Varga Aircraft Corporation 2150A airplane into a lake following a loss of engine power. It lubricates moving parts to reduce friction and wear, but that’s only one of six key functions it performs, and perhaps not even the most important one. Although these engines are bigger than the original UL260 series, we still managed to keep the weight relatively low (100 kg – 2240 lb). Redundant electronic fuel injection and ignition, eco mode. The world’s largest maker of aircraft engines, Rotax, certifies all their engines up to E10 mogas, E0 being their recommended fuel. Low Oct 5, 2013 · Im guessing a buck more, so the Delta between mogas and avgas could rise to $2 or more. UL91 hits the sweet spot. The throttle was found full open, the mixture control was found full rich, and the carburetor heat was found in the cold position. Ethanol can reduce aircraft performance and cause buildup within the engine and fuel system. The UL100E fuel successfully passed a 150-hour engine durability test under the Piston Aviation Fuels Initiative Oct 12, 2023 · My engine was certified for 80 and I used it until it disappeared in the mid ’90s. The lead in fuel also causes more combustion chamber deposits which can in time reduce engine performance. By Terry EdwardsLast month we covered some of the differences between engines designed for aircraft and those that might be converted from auto use. 4 stroke, 6 cylinder, horizontally opposed. EAA began testing and evaluating alternate fuels for aircraft piston engines in 1964. Despite being certified, the engines had serious issues with reduction gearbox longevity. Lycoming Engines, which is among the three larg- est producers of piston aircraft engines, has published a service bulletin (SI 1070) that specifies fuel compatibility for all of its engines. 912 iS Sport | iSc Sport. Feb 19, 2008 · This is my local experience in The Netherlands. Aircraft already delivered are also approved to utilise MOGAS. Mogas, Avgas, Jet A1, Diesel Discover Nov 11, 2014 · With the exception of a few operators using 91 octane in high compression engines and racing, I do not believe you'll find anyone who has in fact observed damage to a Lycoming engine running mogas on compression ratios 8:1 or less. This Safety Leaflet outlines some precautions which pilots should be aware of when operating an aircraft on Unleaded Petrol. They are not “mogas” or automobile ASTM D4814 fuels which require an STC. I know of lots of P. Rotax and others along with the authorities will not allow ethanol in aircraft because of the vapour lock issues. Jun 7, 2023 · If the FAA does what is proposed, and you have an engine listed on Lycoming SI 1070AB as able to run on UL91, you will not need an STC. ‬. Dry sump forced lubrication with separate oil tank, automatic adjustment by hydraulic valve tappet. Fully CS/FAR 23 IFR certified – both analogue and glass cockpit available and validated in many foreign countries in addition to EASA/FAA. To achieve the lead-free goal, EAGLE will: Identify at least one unleaded fuel acceptable for safe General Aviation fleet use. Jan 15, 2024 · Phillips 66 has “paused” evaluation of its unleaded avgas alternative after what sources have told AVweb was a major test failure. ULPower Engines have been developed specifically for use in light aircraft and are manufactured to the highest standards with fully electronic ignition and multi-point fuel injection (FADEC) system as standard equipment. In 1982, EAA successfully changed FAA policy to consider the use of automobile gasoline in aircraft. These included not only automobile gasoline, but also ethanol. Airworthy Autogas will, however, cost a little more than traditional mogas, but maybe that will be a good tradeoff against its pedigree. Feb 6, 2024 · Thanks to the amazing American-developed horizontal drilling methods, America has an 100+ year reserve of oil and gas, and potentially more. Sea Foam is not varsol it is pale oil, isopropyl alcohol and naptha (fuel for Coleman lanterns). Nov 29, 2023 · According to an FAA announcement today, the agency “has approved the advancement to full-scale engine and flight testing of unleaded UL100E aviation fuel for piston-engine aircraft developed by LyondellBasell Industries/VP Racing. Phillips 66 confirmed to AVweb that evaluation of the fuel it is developing with Afton Chemicals through the Piston Engine Aviation Fuels Initiative has been suspended, at least temporarily. 2 liter, 6 cylinder engine delivers up to 200 hp and runs on minimum 97 oct mogas! Maximum power for your plane! Dual (redundant) electronic spark ignition (variable timing) Electronic multipoint fuel injection (pressure and temperature compensated) Electronic RPM limiter Direct propelle Produced. UL350. UL91 and UL94 are ASTM D7547 spec fuels. I am no engine expert but I don’t think lead has anything to do with hardened valve seats. 2009–present. gd fx kt xy mx dw ta kl kw fw