Extended Life Coolant/Antifreeze 877770Q1 is for use in all MerCruiser closed cooling systems in sterndrive and inboard gasoline engine applications. This coolant is pre-diluted to a 50/50 mix with de-ionized water. See your owner's manual or service manual for specific application and instructions.
For use in all MerCruiser closed cooling sterndrive or inboard gasoline engine applications
Provides 5-year, 1,000 operating hour extended life protection
Silicate and phosphate free
Ethylene glycol based, pre-diluted to 50/50 mix with de-ionized water