Vauxhall 2010 Astra Owner's Manual page 187

186 Service and maintenance
Alternative qualities if GM-LL-A-025
or GM-LL-B-025 are not available:
ACEA-A3/B3 or = Petrol engines
A3/B4
ACEA-A3/B4 = Diesel engines
without Diesel
Particle Filter
(DPF)
ACEA-C3 = Diesel engines
with DPF
Topping up engine oil
Engine oils of different manufacturers
and brands can be mixed as long as
they comply with the required engine
oil quality and viscosity.
If engine oil of the required quality is
not available, a maximum of 1 litre of
ACEA C3 grade may be used (only
once between each oil change). The
viscosity should be of one of the
below listed viscosity grades.
Use of engine oil with only ACEA A1/
B1 or only A5/B5 quality is explicitly
prohibited, since it can cause long-
term engine damage under certain
operating conditions.
Additional engine oil additives
The use of additional engine oil
additives could cause damage and
invalidate the warranty.
Engine oil viscosity grades
Use only engine oil viscosity grades
SAE 5W-30 or 5W-40, 0W-30 or
0W-40.
The SAE viscosity grade gives
information of the thickness of the oil.
Multigrade oil is indicated by two
figures. The first figure, followed by
a W, indicates the low temperature
viscosity and the second figure the
high temperature viscosity. Please
select the approriate viscosity grade
depending on your minimum ambient
temperature.
■ down to -25°C:
SAE 5W-30 or SAE 5W-40
■ below -25°C:
SAE 0W-30 or SAE 0W-40
Coolant and antifreeze
Use only silicate-free long life coolant
(LLC) antifreeze.
The system is factory filled with
coolant designed for excellent
corrosion protection and frost
protection down to approx. -28 °C.
This concentration should be
maintained all year round. The use of
additional coolant additives that
intend to give additional corrosion
protection or seal against minor leaks
can cause function problems. Liability
for consequences resulting from the
use of additional coolant additives will
be rejected.
Brake and clutch fluid
Use only brake fluid which exceeds
DOT4 requirements.
Over time, brake fluid absorbs
moisture which will reduce braking
effectiveness. The brake fluid should
therefore be replaced at the specified
interval.
Brake fluid should be stored in
a sealed container to avoid water
absorption.
Ensure brake fluid does not become
contaminated.