In 1995 the company produced vehicles with 2.3 engine having code of KJ-ZEM. It’s important to use 7.5 liters of coolant which has Red color. You should be careful at choosing liquids for Mazda especially for vehicles having 2.0 motor. For 1994 Eunos engine it’s necessary to get normal temperature balance. Only exact type of antifreeze will suit Mazda Eunos cooling system.
So better use Mazda’s advice for servicing 1997 Eunos. If you choose other than Red coolant or use less than 7.5 liters, you can’t expect normal work. There is an important thing for KJ-ZEM engines of Mazda’s production – they expect good service. Providing you keep the rules 2.3 motor installed in Eunos of 1997 year will be long lasting.