Fuel And Lubricating Oils; Fuel Oils; Lubricating Oils; Property Requirements - Yanmar YSE8 Service Manual

5. FUEL AND LUBRICATING OILS
To the engine, fuel oil is food and lubricating oil is blood. Mis-handling might cause
unexpected engine trouble.
The efficiency of the Yanmar engine will depend upon strict
adherence to these instructions and recommendati ons,
It is the salesman's or serviceman's duty and mission to urge the user to follow them.
5 . 1 F u e l O i l s
5.1.!
Propertyroquirsmsnts
i l \ I I i d h . a f a n p T q f i n d
fl
loor ignitability of fuel oil results in a ignition lag, causing difficult starting or
\l knockine.
I "
(2) Low sulphur content
Sulphur contained iD fuel oil when burned is combined witi water to produce
sulphuric acid v,/hich corrodes metallic parts,
(3) No dust or moisture content
Dust and moisture contained in fuel oil can cause faster wear or sticking of the
plunger of fuel injection pump and injection nozzle.
(4) Appropdate viscosity
Fuel viscosity has a relation to the condition of injection, It should be such that the
pluoger and the nozzle valve will be properly lubricated.
5.r.2 R*mmend
b.ands
Suppl ie.
BraIto
SHELL
Shell Diesoline (or local equivalent)
CALTEX
Caltex Diesel Oil
MOBIL
Mobil Diesel oil
ESSO
Esso Diesel Oil
B. P. (British Petroleum)
B. P. Diesel OiI
Lubricating Oils
5.2.1 Functions
(1) Lubrication--reduces friction and wear ou sliding surfaces.
(2) Cooling--carries
away combustion and {riction heat.
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