MasterGuard ArcticShield Marine Antifreeze -50HD™ is suitable for marine engines, both gasoline and diesel types. MasterGuard ArcticShield Marine Antifreeze -50HD™ is a high-quality extra-long-life cooling liquid designed for marine engines, offering superior protection against freezing in harsh marine environments with extremely cold temperatures. Formulated with propylene glycol and innovative corrosion inhibitors, it ensures optimal performance and longevity of boat engines. Uses carboxylate additive technology developed for highly effective system protection with maximum uptime in a wide range of operating conditions. This eco-friendly solution is non-toxic, making it safe for marine environments. Conforms to standards: ASTM D3306, ASTM D4985, ASTM D6210, SAE J1038, CAT EC-1, Cummins CES 14603, Detroit Diesel 7SE298, 93K217, Freightliner 48-22880, GM 1825/1899M/6277M, TMC RP329, Chrysler MS-7170, MS-9769, Ford WSS-M97B51-A1, WSS-M97B44-D, Mack Trucks CN H, 324.

MasterGuard ArcticShield Marine Coolant can also be used in boats and recreational vehicles (RVs), motorhomes, and caravans to protect the inboard engines, drinking water, and toilet systems against freezing.

MasterSeaSafe Antifreeze-30PRO™ is designed specifically for marine engines, offering superior protection against freezing while being environmentally friendly. Its formulation is biodegradable and non-toxic, ensuring it does not harm marine life. Ideal for boaters who prioritize environmental conservation, MasterSeaSafe coolant ensures your engine runs smoothly in cold temperatures without compromising the ecosystem. This product represents a commitment to marine safety and environmental responsibility, making it an excellent choice for eco-conscious boaters looking for reliable engine protection. Do not damage products made of rubber, plastic, cast iron, steel, or aluminum alloys.

MasterSeaSafe Antifreeze-30PRO™ can also be used in boats and recreational vehicles (RVs), motorhomes, and caravans to protect the inboard engines, drinking water, and toilet systems against freezing.