Opel Speedster Operation, Safety, Maintenance Manual page 85

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Information on SAE classifications
Engine and transmission oils are classified
the Society of Automobile Engineers
according to their viscosity. Viscosity
measure of internal friction of the oil in flux,
dependent on its temperature
SAE 10 W_30 10 W40 10 w_50
SAE 0 W30, O W-40
The SAE classification
by information on the quality
indicates the range of application
is the dependent on the outside temperature;
diagram.
Refer to the information given on the previous
page.
Do not switch to a different viscosity in the
event of brief temperature fluctuations.
Further information, see Service Booklet.
T'"5'i55°
Opel specified
Coolant
LLC (long
Brake fluid
DOT4 brake fluid meeting US Safety Standard
FMVSS § 571.116 and SAE Specification
J 1703.
does not provide
of the oil; it merely
of the oil
see
"id
transmission oil
Opel life coolant)