When you’re looking to keep your GMC Sierra 1500 running smoothly, selecting the right antifreeze is essential. You need a product that not only prevents engine overheating but also protects against corrosion and rust. With options like PEAK OET Extended Life and ACDelco DEX-COOL on the market, it’s easy to feel overwhelmed. However, understanding the unique needs of your vehicle and what each antifreeze offers can make all the difference. So, what should you consider before making your choice?
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Key Takeaways
- Choose antifreeze with Organic Acid Technology (OAT), such as Zerex DEX-COOL, for optimal protection in GMC Sierra 1500 models from 1995 and newer.
- PEAK OET Extended Life and ACDelco DEX-COOL are highly rated options with long service life up to 150,000 miles or five years.
- Look for 50/50 prediluted formulations for easy topping off and consistent performance, like Valvoline Multi-Vehicle and PEAK DEX-COOL.
- Ensure compatibility with GM-approved coolants and avoid mixing different antifreeze types to prevent system clogs.
