It’s important to use 7.5 liters of coolant which has Red color. For sufficient use of Mazda 626 you need to use suitable antifreeze. In other way 1993 626 won’t be used quite long and efficiently. It’s better to choose fluid in combination of 1993 year, 1.8 volume of motor and engine code of FP. Make sure you service system at Mazda with installed 1.8 engine correctly.
Providing you keep the rules 2.0 motor installed in 626 of 1988 year will be long lasting. It’s obvious that every FP motor needs good service as stated by Mazda in instruction. Better buy 7.5 liters of good antifreeze in Red color. There is a big plus in servicing 2000 Mazda 626 with all regulations.