What antifreeze is good for aluminum?

When selecting antifreeze for aluminum engines, it's essential to choose a product that contains organic additive technology (OAT) or hybrid organic acid technology (HOAT), as these formulations are designed to be compatible with aluminum components. Look for antifreeze labeled as phosphate-free and containing corrosion inhibitors specifically formulated for aluminum. Brands like Prestone, Zerex, and Peak offer products that meet these criteria. Always check the manufacturer's recommendations for your specific vehicle to ensure compatibility.