Surge tank pressure cap, Thermostat, Engine coolant – Oldsmobile 1999 Cutlass User Manual
Page 232: Notice, Surge tank pressure cap notice

yellow
blue
6-18
NOTICE:
We recommend you use only fluid labeled
DEXRON
R
-
III, because fluid with that label is
made especially for your automatic transaxle.
Damage caused by fluid other than
DEXRON
R
-
III is not covered by your new
vehicle warranty.
Surge Tank Pressure Cap
NOTICE:
Your pressure cap is a 15 psi (105 kPa)
pressure
-
type cap and must be tightly installed to
prevent coolant loss and possible engine damage
from overheating.
When you replace your surge tank pressure cap, a GM
cap is recommended.
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.
Engine Coolant
The cooling system in your vehicle is filled with
DEX
-
COOL
R
engine coolant. This coolant is designed
to remain in your vehicle for 5 years or 150,000 miles
(240 000 km), whichever occurs first, if you add only
DEX
-
COOL
R
extended life coolant.
The following explains your cooling system and how to
add coolant when it is low. If you have a problem with
engine overheating, see “Engine Overheating” in
the Index.