Important Considerations:
* Never mix different types of antifreeze. Mixing different types (e.g., Dex-Cool and traditional green antifreeze) can create damaging sludge.
* Use distilled water, not tap water, to avoid mineral deposits that can clog your cooling system.
* Check your owner's manual: The manual will have the most definitive recommendations for your specific Blazer model and engine.
* Consider a coolant flush: Before adding new antifreeze, a coolant flush might be beneficial, especially if you don't know the history of the previous coolant.
Always check the coolant level in your overflow reservoir regularly, especially during hot weather.
