Operating Manual
UL
POWER
UL260i UL260i
F
UL260i
S
UL260i
SA
MO 260A01 Revision No: 6
Date:
2014-09-15
Page: 16 of 22
Operating media
Fuel
UL260i
Regular unleaded automotive fuel with a minimum of 95 octane RON (= 87 MON=91AKI) should be
used to operate the engine.
AVGAS 100 LL my be used if regular fuel is not available.
Note:
Due to higher lead content in AVGAS, the wear of the valve and valve seats, the deposits in
combustion chamber and lead sentiments in the lubrication system will increase.
UL260iF/UL260iS/UL260iSA
Regular unleaded automotive fuel with a minimum of 98 octane RON(=90 MON=94AKI) should be
used to operate the engine.
AVGAS 100 LL may be used if regular fuel Is not available.
Note:
Due to higher lead content in AVGAS, the wear of the valve and valve seats, the deposits in
combustion chamber and lead sentiments in the lubrication system will increase.
Lubricants
High quality full synthetic or semi synthetic multi grade oil should be used to guarantee the quality
of lubrication on all moving and rotating parts of the engine.
Note: We recommend the use of Motul 300V (15W50) oil or Aeroshell SAE15W50 oil
as most of our engine testing has been done with these types with good
results.
Attention:
Do not use special brake-in oils as these don't guarantee the same quality of
lubrication to crankshaft, camshaft and tappets.
Attention:
Do not fill the oil sump with more than 3,5 litres (3,7 quarts) of oil as more could
cause the oil to constantly be whipped by camshaft gear. The absolute minimum
quantity in the oil sump (before take-off) should be 2,5 litres (2,6 quarts), so be
sure to add sufficient oil to compensate the quantity of oil that remains in the oil
cooler, -lines and -galleries.
Attention:
If AVGAS 100 LL is used frequently, we advise not to use full synthetic oil, as the oil
does not handle the lead deposits as well. More frequent oil changes are also
recommended.
