Blue Coolant

This information applies to Chevrolet Aveo (US and Canada), and Epica, Optra and Wave (Canada) between 2004 - 2006

According to Pre-Delivery Inspection Bulletins 03-00-89-040 and 04-00-89-034, the cooling system is filled at the factory with a blue coolant (conventional ethylene glycol). The blue coolant should be treated in the same manner as any other non-DexCool based coolant.

TIP: DexCool should not be mixed with conventional ethylene glycol coolants.

When the cooling system needs to be topped off or flushed, use a 50/50 mixture of clean, drinkable water (preferably distilled) and conventional ethylene glycol coolant that conforms to GM Specification 1825M, such as p/n 12378560 (US - 1 gallon) or p/n 993089 (Canada - 4 liters).  According to the owner's manual, this coolant must be drained, flushed, and refilled every 30,000 miles (50,000 kilometers).

- Thanks to James Parkhurst