Nanni N13.430 CR2, Operator'S Manual

Page: 19 / 110

19
INERT IMPURITIES IN FUEL
Others impurities than micro-organisms and bacteria
do exist : they are rust debris falling out from the internal
walls of the metal tanks. Some types of fibreglass tanks
are also subject to osmosis over time and tiny particles
may come off internal walls and circulate in the diesel
fuel. These impurities can pass through the filters and
creep into the injection system and cause a total failure
of the engine which is not covered by Nanni Industries
warranty.
DIESEL LUBRICANTS
PRECAUTIONS TO UNDERTAKE
Engine oils must be handled with care, both for reasons of
safety and the risk of pollution for the environment.
Due to their inertia, hot oils retain a higher temperature
than expected. A hot oil can cause severe burns on the skin
and leave after effects. This phenomenon is emphasized
when draining used oil. Wear protective gloves and eye
protective glasses. Avoid synthetic clothing.
To avoid introduction of impurities into the engine
during filling or topping up, be sure to thoroughly clean
the filler inlet hole first and use a container free of any
contamination.
OILS RECOMMENDED OR AUTHORIZED
It is necessary to differentiate the breaking-in oils from the
lubricating oils after running-in. All engine manufacturers
do not have the same recommendations. User manuals
provide information about proper oils to use for running-
in (if recommended) and at which running hours and of
time lapse of run.
GENERALITIES
The oil used in the engine must have a viscosity in
accordance with the ambient temperatures at which the
engine is operated, according to API (American Petroleum
Institute) and SAE (Society of Automotive Engineers)
classifications.
Following the entry into force of strict anti-pollution
regulations, engine oils have been developed for use with
low sulphur fuels (LSD or ULSD). The oils classified “CF”
being now obsolete, use oils “CJ-4, CI-4, CH-4”.
The oils “CH-4” do come in replacement of the “CD, CJ,
CF-4 and CG- 4“. In all cases, the use of high sulphur
fuel significantly reduces the span between oil changes
whichever oil is used.
S03 FLUIDS