PolarZone™ Extended Service Interval Antifreeze/Coolant (ESI) is an ethylene glycol-based NOAT antifreeze formulated to meet the requirements of todays’ technologically advanced mixed fleet diesel and gas engines. The coolant additives’ carboxylates and nitrites work together to provide the required cavitation protection of cylinder liners and allows for longer preventative maintenance intervals.
Features & Benefits
- Extended life protection; 150,000 miles or 5 years
- Eliminates need for SCAs and chemically charged filters
- Long term corrosion protection for aluminum, brass, cast iron, steel, solder, and copper
- Protects against summer boil-over and winter freeze-up