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LPW / LPWs / LPWX enGIne oPeRAtoRs' HAnDBooK
4.2 Recommended oil viscosity grades for different temperature ranges.
Note A:
intermittent running;
Note B:
synthetic oils only. NB. The formula for conversion
from degrees Fahrenheit to degrees Centigrade is°F = (1.8 x °C) + 32.
20W-40 multi grades are recommended
for continuous full-load operation at this
temperature. (Monograde SAE 40 oils
are not recommended.)
In order to maintain the cold-starting
characteristics of any recommended
grade it is essential that oil changes
are made within the Lister Petter
recommendations (see
5. Routine
Maintenance
).
An oil change is recommended
immediately if the engine fails to reach
its normal cold start cranking speed
owing to excessive oil viscosity.
CAUtIon
dilution of the lubricating oil with
fuel will adversely affect cold starting
and will increase oil consumption.
4.3 CooLAnt * MIXtURe
ConCentRAtIon
To determine the amount of coolant
concentrate to be added, fi rst calculate
the total coolant capacity by adding
together the engine and radiator
volumes (see
5.5.4 Coolant Capacity
).
4.3.1
For engines with aluminium core
radiator:
Do not use tap water, the minerals
and ions typically found in tap
water can be corrosive to internal
engine components including
radiators, and can cause a more
rapid depletion of the anti-corrosion
additives found in most antifreeze.
A 50% concentration of coolant
additives by volume must be maintained
under all operating conditions. If a
component fails due to an incorrect
coolant concentration being used it will
not be covered by the LP warranty.
When topping up coolant please
ensure that the “top up” is of the correct
concentrate mix and not just water.
The specification of the coolant
concentrate should comply with one
of the following:
BS6580 : 1985;
MIL-A-11755D;
MIL-A-46153/B.
* Coolant defi ned as the combination of water, corrosion inhibitor and antifreeze