Opel Automobile Owner's Manual page 143

Engine oil quality for European
service schedules
ACEA-C3 = Diesel engines with
DPF
ACEA-A3/ = Diesel engines
B4 without DPF
ACEA-A3/ = Petrol engines
B3
GM-LL-A/B-025 quality oil exceeds
ACEA specification A3/B4 and can
therefore be used in both petrol
engines and diesel engines without
DPF.
Engine oil quality for International
service schedules
ACEA-C3 = Diesel engines
with DPF
ACEA-A3/B3 or = Diesel engines
API-CF without DPF
ACEA-A3/B3 or = Petrol engines
API-SL orAPI-SM
These oil qualities must only be used
with the international service
schedule.
Topping up engine oil
Engine oils of different manufacturers
and brands can be mixed as long as
they comply with the required engine
oil specifications (quality and
viscosity).
Use of ACEA A1/B1 and A5/B5
engine oil is expressly forbidden,
since they can cause long-term
engine damage under certain
operating conditions.
Engine oil additives
The use of engine oil additives could
cause damage and invalidate the
warranty.
Engine oil viscosity
For diesel engines use SAE viscosity
0W-30, 0W-40, 5W-30 or 5W-40.
For petrol engines use SAE viscosity
0W-30, 0W-40, 5W-30, 5W-40 or
10W-40.
The SAE viscosity rating defines the
ability of an oil to flow. When cold, oil
is more viscous than when hot.
Service and maintenance
Multigrade oil is indicated by two
figures. The first figure, followed by
a W, indicates low temperature
viscosity and the second figure the
high temperature viscosity.
Coolant and antifreeze
Use only silicate-free long life coolant
(LLC) antifreeze.
The system is factory filled with
coolant designed for frost protection
down to approx. -28 °C. This
concentration should be maintained
all year round.
Coolant additives intended to give
additional corrosion protection or seal
against minor leaks can cause
function problems. Liability for
consequences resulting from the use
of coolant additives will be rejected.
Brake and clutch fluid
Only use DOT4 brake fluid.
Over time, brake fluid absorbs
moisture which will reduce braking
effectiveness. The brake fluid should
therefore be replaced at the specified
interval.
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