Before choosing fluid note that engine code BPF1 and volume of 1.8 were installed to your car in 1995. For Mazda MX5 it’s important to have optimal antifreeze inside. You should be careful at choosing liquids for Mazda especially for vehicles having 2.0 motor. There is no chance 1990 MX5 engine will work efficiently with bad cooling. Only Red antifreeze type is suitable and you’ll need 7.5 liters of it.
A lot of L8-DE motors are used long in Mazda cars but only with good service. Providing you keep the rules 2.0 motor installed in MX5 of 2011 year will be long lasting. It will be advantageous to follow Mazda’s rules for 1997 MX5 service. Better buy 7.5 liters of good antifreeze in Red color.