Starbrite 033264 Star Cool Synthetic Engine Coolant Premix - 50/50 64 oz

Starbrite Star Cool® Synthetic Engine Coolant represents a significant advancement in engine cooling technology. This high-performance, extended-life coolant combines a propylene glycol base with advanced Poly Organic Additive Technology (POAT) to deliver superior cooling performance and engine protection for all water-cooled gasoline and diesel engines.

Key Performance Features:

• Reduces operating temperatures faster than conventional coolants to help engines develop maximum horsepower
• Revolutionary POAT additive package maintains optimal engine temperature under demanding conditions
• Passivates metal surfaces to create a protective barrier against corrosion
• Formulated to seal pinhole leaks and small fissures in the cooling system
• Essentially non-toxic propylene glycol formula is safer than ethylene glycol coolants

Extended Service Life:

• Gasoline engines: Up to 2+ years, 250,000 miles, or 4,000 hours
• Diesel engines: Up to 7+ years, 750,000 miles, or 12,500 hours
• Exceeds all OEM and ASTM specifications for extended service intervals

Protection and Convenience:

• Protects against boilover to 265°F and freezing to -26°F (with 15 psi cap)
• Pre-mixed 50/50 with de-ionized water—ready to use straight from the bottle
• Compatible with all other coolant types for easy top-off or complete flush and fill
• Will not clog radiators or restrict coolant flow
• Legal for sale and use in all 50 states

Ideal for marine, automotive, RV, and powersports applications where maximum performance and extended protection are required. This 64-ounce bottle provides convenient quantity for topping off systems or servicing small engines.