Engine Coolant - Chevrolet 2006 Colorado Owner's Manual

When to Check and What to Use
Refer to the Maintenance Schedule to determine how
often you should check the fluid level in your clutch
master cylinder reservoir and for the proper fluid.
See Recommended Fluids and Lubricants on page 6-12.
How to Check and Add Fluid
The proper fluid should be added if the level does not
reach the bottom of the diaphragm when it is in place in
the reservoir. See the instructions on the reservoir cap.
5-24

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 your cooling system and how to add
coolant when it is low. If you have a problem with engine
overheating, see Engine Overheating on page 5-27.
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.
•
Let the warning lights and gages work as they should.
Notice: Using coolant other than DEX-COOL
cause premature engine, heater core, or radiator
corrosion. In addition, the engine coolant may
require changing sooner, at the first maintenance
service after each 25,000 miles (41 500 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.
®
may