1999 Oldsmobile Silhouette oil type

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Radiator Pressure Cap
NOTICE:
Your radiator 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. Be sure the arrows on the cap
line up with the overflow tube on the radiator
filler neck.
When you replace your radiator 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.
When you replace your thermostat, a GM thermostat
is recommended.
Engine Coolant
The cooling system in your vehicle is filled with
DEX
-COOL
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
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 ªEngine Overheatingº in
the Index.
A 50/50 mixture of clean, drinkable water and
DEX
-COOL
coolant will:

Give freezing protection down to
-34F (-37C).

Give boiling protection up to 265F (129C).

Protect against rust and corrosion.

Help keep the proper engine temperature.

Let the warning lights and gages work as
they should.

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Engine Crankcase - Oil
and Filter Change4.5 quarts (4.3 L) . . . . . . . . . . .
Fuel Capacity
Standard/Regular 19.8 gallons (75.0 L). . . . . . . . . . . .
Optional/Extended 24.3 gallons (92.0 L). . . . . . . . . . .
Refrigerant,
Air Conditioning*See the Refrigerant . . . . . . . .
Label under the hood.
Tire Pressures,
SizesSee Tire
-Loading . . . . . . . . . . . . . . . . . . . . .
Information label on driver's door.
Wheel Nut Torque100 lb
-ft (140 N´m) . . . . . . . . . .
Windshield Washer Fluid1 gallon (0.37 L) . . . . . . .
*See Air Conditioning Refrigerants later
in this section.
NOTE: All capacities are approximate. When adding, be
sure to fill to the appropriate level, as recommended in
this manual.
Engine Specifications
Engine VIN Code E. . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Type V6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Firing Order 1
-2-3-4-5-6 . . . . . . . . . . . . . . . . . . . . . .
Horsepower 185. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermostat Temperature
Specification 195
F (91
C) . . . . . . . . . . . . . . . . . . .
Air Conditioning Refrigerants
Not all air conditioning refrigerants are the same.
If the air conditioning system in your vehicle needs
refrigerant, be sure the proper refrigerant is used.
If you're not sure, ask your dealer.

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Normal Maintenance
Replacement Parts
Air Cleaner Filter AC Type A-1208C . . . . . . . . . . . . .
Passenger Compartment
Air Cleaner Filter (2) 52482929. . . . . . . . . . . . . . .
Engine Oil Filter PF47. . . . . . . . . . . . . . . . . . . . . . . .
Spark Plugs AC Type 41
-940 . . . . . . . . . . . . . . . . . . .
Gap: 0.060 inches (1.5 mm)
Windshield Wiper Blades
Length 24.0 inches (60.0 cm). . . . . . . . . . . . . . . . . .
Type Sheperd's Hook. . . . . . . . . . . . . . . . . . . . . . . . .
Backglass Wiper Blade
Length 16.0 inches (40.6 cm). . . . . . . . . . . . . . . . . .
Type Sheperd's Hook. . . . . . . . . . . . . . . . . . . . . . . . .
Vehicle Dimensions - Regular Wheel Base
Length 187.4 inches (475.9 cm). . . . . . . . . . . . . . . . .
Width 72.0 inches (183.0 cm). . . . . . . . . . . . . . . . . . .
Height 67.4 inches (171.2 cm). . . . . . . . . . . . . . . . . . .
Wheelbase 112.0 inches (284.5 cm). . . . . . . . . . . . . .
Front Tread Width 61.5 inches (156.2 cm). . . . . . . . .
Rear Tread Width 63.3 inches (160.8 cm). . . . . . . . . .
Vehicle Dimensions - Extended Wheel Base
Length 201.4 inches (511.5 cm). . . . . . . . . . . . . . . . .
Width 72.2 inches (183.4 cm). . . . . . . . . . . . . . . . . . .
Height 68.1 inches (172.9 cm). . . . . . . . . . . . . . . . . . .
Wheelbase 120.0 inches (304.7 cm). . . . . . . . . . . . . .
Front Tread Width 61.5 inches (156.2 cm). . . . . . . . .
Rear Tread Width 63.3 inches (160.8 cm). . . . . . . . . .