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Jabiru Aircraft
Pilot Operating Handbook
Model J170-D
JP-FM-13
Revision:
0
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28 Feb 2020
Page 8-78
8.6 APPROVED FUEL GRADES & SPECIFICATIONS
•
Avgas 100LL
•
Avgas 100/130
•
MOGAS with minimum Octane Rating of
95 RON
may be used but is not recommended (the
fuel specification placard; P/No 5091344, does not explicitly state ‘MOGAS’ because it is not
recommended).
•
Do not use fuel additives such as Octane Boosters.
WARNING
For the reasons noted below Jabiru Aircraft do not recommend using MOGAS. It is
important to realise that due to the lower QA standards, even following best practice it is
still possible for a particular tank-full of MOGAS to be unsuitable or unsafe for use. Jabiru
Aircraft may choose to void any warranty for engines and airframes which have been
damaged due to “bad” MOGAS. Operators who choose to use this fuel do so at their own
risk.
WARNING
Jabiru has not verified the attributes claimed by fuel additive manufacturers and warn
against using them as they may have detrimental effects.
CAUTION
Using a fuel which is not recommended may have detrimental effects on airworthiness,
maintenance and safety.
a.
Compared to AVGAS the chemical, delivery and storage quality control requirements for
MOGAS are much less stringent. Because of this, there is no practical way for an operator to
know that any given volume of MOGAS bought through normal sources will be compatible with
use in a Jabiru Aircraft Engine.
b.
A large amount of testing using MOGAS has been carried out by Jabiru Aircraft under
controlled conditions and this has shown that MOGAS can be a suitable fuel. However,
experience in service where conditions are not controlled has shown it to be inconsistent and
inherently risky
– contributing to many different service difficulties.
c.
Do not mix AVGAS with MOGAS. The two fuels are chemically distinct and the qualities of a
mixture impossible to predict. Refer to Jabiru Service Letter JSL007 for more information.
d.
Alcohol levels in MOGAS must be monitored. Operators must test each batch before use to
ensure alcohol levels are within limitations. Do not trust that the fuel is what the seller claims.
e.
Further information on fuels is given in Jabiru Service Letter JSL007. Any operator considering
using MOGAS must read, understand and follow the requirements it contains.