Shell Removes Lead From Light Aircraft Fuel

London (ots/PRNewswire) -

Shell today became the first major oil company to develop a
lead-free replacement for Aviation Gasoline (Avgas 100 and 100LL),
which will now begin a strict regulatory approvals process. Avgas is
one of the last common transportation fuels to contain lead and is
used by light aircraft and helicopters. Shell's new lead-free
formulation comes after 10 years of exhaustive R&D, as well as
successful initial testing, carried out in the last two months by two
original equipment manufacturers (OEMs).

Xinsheng (Sheng) Zhang, Vice-President of Shell Aviation, said:
"We are proud of this first for Shell Aviation. This advanced product
is the latest milestone in our long history of innovation. We believe
that with industry support, a stringent approvals process can be
completed for this new lead-free product within a short time-frame.
We look forward to working alongside our technical partners and
authorities to progress the necessary approvals needed to make this
product a reality for use in light aircraft engines of all types."

Avgas currently includes lead in its formulation to meet fuel
specifications and boost combustion performance (known as Motor
Octane rating). Shell has developed an unleaded Avgas that meets all
key Avgas properties and that has a Motor Octane rating of over 100,
an industry standard. The development of a technically and
commercially-viable unleaded Avgas that meets these criteria has been
seen by the aviation industry as a significant challenge, due to the
tight specifications and strict flight safety standards that it has
to adhere to.

To get to this stage, Shell Aviation technologists carried out an
intensive internal laboratory programme, including in-house altitude
rig and engine testing. Working alliances were then formed with
aviation engine manufacturer Lycoming Engines (Lycoming) and the
light aircraft manufacturer Piper Aircraft Inc. (Piper). As a result,
the formulation was successfully evaluated in industry laboratory
engine (bench) tests by Lycoming and in a flight test by Piper.

"Lycoming Engines commends Shell on launching its unleaded Avgas
initiative," states Michael Kraft, Senior Vice-President and General
Manager of Lycoming Engines. "They engaged Lycoming to test their
fuel on our highest octane demand engine and we can confirm that it's
remarkably close to Avgas 100LL from a performance perspective. This
initiative is a major step in the right direction for general
aviation."

"Piper Aircraft is pleased to participate with Shell and Lycoming
in this feasibility flight test programme," said Piper Vice-President
of Engineering Jack Mill. "Recently, we successfully flew an
experimental non-production Piper Saratoga with Shell's new
formulation for about an hour. We appreciate the opportunity to work
with Shell and Lycoming in this preliminary investigation of the
technologies, which could in several years lead to flying unleaded
fuel in our production airplanes."

Shell will now engage the aviation industry, regulators and
authorities, including the US Federal Aviation Administration,
American Society for Testing and Materials (ASTM) and European
Aviation Safety Agency (EASA) to achieve approvals for the unleaded
Avgas. Shell expects to also work with other OEMs to continue the
testing and refinement program as the approvals process progresses.

NOTES TO EDITORS

For supporting images please click here
[http://shell-moodboard.qbank.se/?h=529cc3ad8f84f545205dbbd6ea0629a5
].

- The two main types of aviation
[http://www.shell.com/home/content/aviation/products/fuels ] fuel are aviation
turbine fuel (jet fuel) and aviation gasoline (Avgas). Jet fuel is used by larger,
gas-turbine-engine powered aircraft, while Avgas is used in smaller, piston-engine
powered aircraft. Both are produced to very stringent specifications.
- There are two main Avgas grades, 100 and 100LL (low lead). 100 is a
measurement of octane rating.
- Avgas is gasoline type fuel. The global volume for Avgas is much lower than
jet fuel, as although Avgas-fuelled aircraft outnumber jet-fuelled aircraft, they are
generally much smaller.

About Shell Aviation

- Shell Aviation is a leading global supplier of aviation fuels and
lubricants with a heritage of over 100 years. We produce aviation fuels and lubricants
(across a range of grades); market, sell and distribute them - as well as offer
further related services to customers. We supply fuel at around 800 airports in
approximately 40 countries. We refuel a plane every 12 seconds.
- Our customers are airports and airlines, big and small, plus private customers
such as corporate jet operators and flying clubs. We have one of the world's most
extensive fuelling networks and have a strong supply chain. Used worldwide, our
AeroShell aviation lubricants range is one of the world's most comprehensive with
proven performance.
- We have a portfolio of world-class brands and products and continue to invest
in technical innovation. We have strong working relationships with OEMs, put the
customer at the heart of what we do and respond to industry opportunities and
challenges.

Royal Dutch Shell plc

Royal Dutch Shell plc is incorporated in England and Wales, has
its headquarters in The Hague and is listed on the London, Amsterdam
and New York stock exchanges. Shell companies have operations in more
than 70 countries and territories with businesses including oil and
gas exploration and production; production and marketing of liquefied
natural gas and gas to liquids; manufacturing, marketing and shipping
of oil products and chemicals and renewable energy projects. For
further information, visit http://www.shell.com.

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