2003 Pontiac Sunfire Owner's Manual - Page 227

How to Check and Add Fluid You do not need to check the fluid level unless you suspect a clutch problem. To check the fluid level, take the cap off. If the fluid reaches the step inside the reservoir, the fluid level is correct. The reservoir is located near the back of the engine compartment on the driver's side of the vehicle. See Engine Compartment Overview on page 5-12 for more information on location. 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: When adding coolant, it is important that you use only DEX-COOL@ (silicate-free) coolant. If coolant other than DEX-COOL@is added to the system, premature engine, heater coreor radiator corrosion may result. In addition, the engine coolant will require change sooner at 30,000 miles (50,000 km) or 24 months, whichever occurs first. Damage caused the use coolant other than by of DEX-COOL@is not covered by your new vehicle warranty. 0 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 Engine Overheating on page 5-24. -- What to Use Use a mixture of one-half clean, drinkable water and one-half DEX-COOL@ coolant which won't damage aluminum parts. If you use this coolant mixture, you don't need to add anything else. 5-22