Can Different Types of Antifreeze Be Mixed?
1 Answers
It is generally not recommended to mix antifreeze of different brands and types, as the differing chemical compositions may cause the antifreeze to lose effectiveness. When replacing antifreeze, it is best to use the same brand and type. If switching to a different brand, it is advisable to first drain the existing antifreeze from the engine and thoroughly clean all cooling lines before adding the new antifreeze. Vehicle antifreeze typically needs to be replaced every 2 years or 40,000 kilometers, though this is only a general guideline. For commercial vehicles with higher mileage, the replacement interval should be shorter. Since driving conditions vary for each vehicle, the replacement schedule should be adjusted based on actual usage. Regularly check the antifreeze level and top it up if low. If suspended particles, sediment, discoloration, or deterioration are observed, replace the antifreeze immediately and clean the system. If antifreeze has been accidentally mixed, drain the antifreeze from the radiator, flush it with clean water, and then refill with new antifreeze. Most vehicle radiators have a drain valve at the bottom rear, usually black in color, which can be unscrewed to release the fluid. However, never remove the radiator cap while the engine is hot, as high-pressure antifreeze may spray out and cause severe burns.
