Vauxhall Insignia Owner's Manual page 199

198 Service and maintenance
Engine oil viscosity
Use only engine oil viscosities SAE
0W-30, 0W-40, 5W-30 or 5W-40.
The SAE viscosity rating defines the
ability of an oil to flow. When cold, oil
is more viscous than when hot.
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 excellent
corrosion protection and 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
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.