Buick 1998 Riviera Owner's Manual Page 265

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Thermostat
Engine
coolant temperature
is
controlled by a thermostat
in the engine coolant system. The thermostat stops the
flow
of
coolant through the radiator until the coolant
reaches a preset temperature.
When you replace your thermostat, a
GM
thermostat is
recommended.
Power Steering
Fluid
When to Check Power Steering
Fluid
It
is
not necessary to regularly check power steering
fluid unless you suspect there is a leak in the system
or
you hear an unusual noise.
A
fluid loss in this system
could indicate a problem. Have the system inspected
and repaired.
The power steering fluid reservoir
on
the L67 engine is
located below the generator and behind the accessory
drive belt.
How
To
Check Power Steering
Fluid
When the engine compartment is cool, wipe the cap and
the top
of
the reservoir clean, then unscrew the cap and
wipe the dipstick with a clean rag. Replace the cap and
completely tighten
it.
Then remove the cap again and
look at the fluid level on the dipstick.
The level should be at the FULL COLD mark.
If
necessary, add only enough fluid to bring the level up
to the mark.
What
to
Use
To determine what kind
of
fluid to use, see
“Recommended Fluids and Lubricants” in the Index.
Always use the proper fluid. Failure to use the proper
fluid can cause leaks and damage hoses and seals.
6-24
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