The ACDelco 10-5027 GM OEM Extended Life Antifreeze Coolant is a high-quality 50/50 prediluted coolant designed for extended vehicle life. With a volume of 3 gallons, this pack of 3 is specifically formulated for GM vehicles and is manufactured in the United States by ACDelco, a trusted brand in automotive tools and supplies. This product is a reliable choice for maintaining optimal engine performance and preventing overheating in your vehicle.