Cadillac 2008 CTS - Manual (Page 309)

How to Check and Add Fluid
Make sure the fluid level is at the MIN (Minimum) line
on the side of the reservoir. If it is not, remove the
cap and add the proper fluid until the level reaches the
MIN line.
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 five years or 150,000 miles
(240 000 km), whichever occurs first, if you add only
DEX-COOL
® extended life coolant.
The following explains the cooling system and how to
add coolant when it is low. If the engine overheats, see
Engine Overheating on page 5-30.
A 50/50 mixture of clean, drinkable water and
DEX-COOL
® coolant will:
• Give freezing protection down to
−
34°F (
−
37°C).
• Give boiling protection up to 265°F (129°C).
• Protect against rust and corrosion.
• Help keep the proper engine temperature.
• Allow the warning lights and gages to work as
they should.
Notice: Using coolant other than DEX-COOL ® may
cause premature engine, heater core, or radiator
corrosion. In addition, the engine coolant may
require changing sooner, at the first maintenance
service after each 30,000 miles (50 000 km) or
24 months, whichever occurs first. Any repairs
would not be covered by your warranty. Always use
DEX-COOL
® (silicate-free) coolant in your vehicle.
5-27