Vauxhall Meriva Owner's Manual page 206

202 Service and maintenance
Eng ine oi l
Engine oil is graded by qua lity and
viscosity . When choosing an eng ine oil, the
quality g ra de is more important than the
viscosity .
The new eng ine oil GM-Dex os 2 is of the
highest quality available at the moment. If
it is una vailable, engine oils of other listed
qualities have to be used.
Eng ine oi l for Serv ice sc hedule
GM-Dexos 2 = Petrol a nd Diesel
engines
GM-LL-A-025 = Petrol engines
GM-LL-B-025 = Diesel engines
GM General M otors Europe
LL Long life
A or B Details of engine oil g ra de
025 Validity code
Engine oil: top up
Oils from different m anufacturers and
different b ra nd s of oil can be mixed as long
as the grades (q ua lity and viscosity ) are
the same.
Not all the engine oils ava ila ble on the
market are of a suitable quality. Alw ays
check that the req uired specification and
classification are giv en on the cans.
If engine oil of the req uired quality is not
available, a m aximum of 1 litre of ACEA
A3/B4 or A3/B3 grade may be used (only
once between eac h oil cha nge). The
viscosity should be of the correct rating.
It is forbidd en to use engine oil of
grades AC EA A1/B1 and A5/B 5. Und er
certain circum stances, these oils c an ca use
long-term dam age to the engine.
Engine oil add itiv es
The use of motor oil additives c an lead to
dam age and will inv alidate the guarantee.
Engine oil vi sc osit y
O nly use eng ine oils with viscosity
grades 0W-30, 0W-40, 5W-30 or 5W-40.
The SAE visc osity grading system indicates
the oil' s a bility to flow. O il is more v iscous
when cold than when warm .
Multigrade oil has two num bers. The first,
followed by a W, indicates the viscosity at
low temperatures and the second indicates
the visc osity a t hig h temperatures.