Vauxhall 2009 Tigra Owner's Manual page 161

Engine oil
Engine oil is characterised by its quality
and viscosity. When selecting an engine
oil to use, quality is more important than
viscosity.
Engine oil for Service Plan
GM-LL-A-025: Petrol engines
GM-LL-B-025: Diesel engines
GM General Motors Europe
LL Longlife
A or B Engine oil grade
025 Validity index
Vauxhall engine oil complies with
classifications GM-LL-A-025 and
GM-LL-B-025 and is therefore suitable
for both petrol and diesel engines.
Top up engine oil
Oils from different manufacturers and
makes can be mixed as long as the engine
oil criteria (quality and viscosity) are
observed.
Not every engine oil available on the
market meets the quality requirements,
so always check whether the specifications
and classifications required are shown on
the container.
If engine oil of the required quality is not
available, no more than 1 litre of category
ACEA A3/B4 or A3/B3 may be used (only
twice between two oil changes). The
viscosity must comply with requirements.
The use of engine oil category ACEA A1/B1
and A5/B5 is expressly prohibited as it can
cause long-term damage to the engine
under certain circumstances.
Service and Maintenance
Engine oil additives
The use of engine oil additives can cause
damage and invalidate the warranty.
Engine oil viscosity
Only use engine oil viscosities 0W-30,
0W-40, 5W-30 or 5W-40.
The SAE viscosity class indicates the flow
capacity of the oil: In cold weather, the oil
is more viscous than when warm.
Multigrade oil is indicated by two figures.
The first figure followed by W indicates
the viscosity at low temperature, and
the second figure the viscosity at high
temperature.
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