Antifreeze for Mitsubishi
Mitsubishi is one of the few brands whose specific specification number, ES 64-217, is printed directly on the official Zerex data sheet. This is not a vague “compatible”, it is a named standard. Mitsubishi's factory coolant is green, so the green version is the one that fits here.
Mitsubishi's factory long-life coolant is green, so here we recommend the green version. If your tank holds blue fluid, take Zerex Asian Blue instead.

Photographs come from the manufacturer's official materials.
The Outlander PHEV and its separate circuits
The Outlander PHEV has several independent thermal circuits: engine, power electronics and battery. Total fluid volume is therefore larger than on a conventional petrol car, and draining and refilling calls for more care.
Before filling, check the manual for the specification listed for each circuit. A PHEV battery loop sometimes requires a different fluid.
Older Mitsubishis and flushing
Many Pajeros, Delicas, Lancers and Space Wagons in Georgia have gone decades without a flush. If the reservoir fluid is brown or shows sediment, flush the system with clean water before filling with anything new.
Pouring fresh coolant into a dirty system means its inhibitors are spent fighting contamination instead of building a protective film, and they exhaust far sooner.