Cooling Liquid - Whisper Power M-SQ27 User Manual

not the case. One should not follow these
recommendations.
specification will cause high oil consumption.
2 Oil viscosity:
We recommend a multigrade oil 10W40.
3 Oil capacity:
Excluding the oil filter the content of the crankcase is 9
l. Including the oil filter it is 9.3 l. Note that the engine
may contain some residual oil due to testing at the
factory.
While filling, check the lubricating oil level by means of
the engine oil dipstick. Do not overfill with lubricating oil
as this may have a detrimental effect on engine
performance.
4 Oil pressure
•
Minimum at idle 98 kPa (1 kgf/cm²/14psi) (1 bar).
•
At 2230 rpm ±300 kPa (3 kgf/cm²/45 psi) (3 bar).

2.5.13 Cooling liquid

The engine is cooled by cooling liquid. The capacity of this
system of the M-SQ27 is 9.5 litres.
Always use coolant which is compatible with
aluminium components of the cooling system.
Do not mix coolants with different kinds of
chemical compound, as this may cause
EN / M-SQ 27 / August 2020
Using the wrong
congelation of the coolant. In case of doubt
refresh the content of the entire cooling
system. Use only long-life type G12+ cooling
liquid in order to minimize maintenance.
We recommend not using water but cooling liquid that is
marketed for the use in combustion engines. Cooling liquid
protects the engine against frost to minus 25° C. Also it
protects the engine block against corrosion. One can fill the
engine via the filling cap on the exhaust manifold. Fill up till
the level is just below the filling cap. When the engine is on
temperature the liquid will expand and the redundant liquid
will be pressed into the expansion tank. This tank has to be
filled up till the mark. When cooling liquid is not available
clean fresh water could be used with an additive of anti-
freeze. When using water with anti-freeze the right mixture
has to be calculated according to the information of the
supplier of the anti-freeze. When the cooling is based on
keel cooling or radiator cooling the capacity of these coolers
and piping has to be taken into account calculating the right
mixture.
The cooling liquid in the engine is pressurised and has a
boiling point above 100° C. The temperature switch in the
thermostat housing switches at 110° C. When keel cooling
is applied the cooling system is not pressurised. There
should be a special cap on the manifold without valves
leaving the connection to the expansion tank open. See the
special manual on keel cooling and radiator cooling.
INFORMATION
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