Perkins 4012TESI Series, User Handbook Manual, Page: 20 / 57

LUBRICATING OIL
16 4012/16 Gas, February 1998
During the early life of the engine it will be found that the parameters marked * will have
higher levels as a result of the running in procedure.
UNDER NO CIRCUMSTANCES IS THE OIL TO BE USED FOR MORE THAN 900 HOURS
EVEN IF THE ANALYSIS SHOWS THAT THE OIL IS IN ACCEPTABLE CONDITION.
NOTE: When operating on methane based fuels, approximately one litre of water is
produced for every cubic metre of methane burnt. It is essential to ensure that the piston
blow by can not condense either in the crankcase or in any pipes associated with the
breather. Water has a devastating effect on oil life due to the attack on the additive package
in the oil. It is essential that the engine breather is functioning effectively. Water should be
drained from the sump weekly.
APPROVED LUBRICATING OILS (NATURAL GAS ENGINES)
(Suitable for British and Durch natural gas)
Oil Company
Type
MOBIL Pegasus 480 (Suitable for catalyst equipped engines)
MOBIL Pegasus 489
ESSO Estor Supreme LA 40
ESSO Estor Protec LA 40
TEXACO Geotex LA or HD
SHELL Mysella MA 40
CASTROL NG404-408
APPROVED LUBRICATING OILS (BIOGAS AND OTHER GASES)
Oil Company
Type
MOBIL Pegasus 489 + *EM/PA programme
*EM/PA = Equipment Maintenance through Progressive Analysis
CATALYST EQUIPPED GAS ENGINES
These require oils with sulphated ash limited to 0.5%, zinc limited to 0.04% and
phosphorous limited to 0.09% by weight, (see
the above table ).
WARNING
FAILURE TO COMPLY WITH THESE INSTRUCTIONS MAY
RESULT IN ENGINE DAMAGE.