Don’t underestimate the importance of Mazda’s 2.3 engine cooling system. There is no chance 2004 MPV engine will work efficiently with bad cooling. It’s better to choose fluid in combination of 2005 year, 2.0 volume of motor and engine code of RF5C. There are some conditions in servicing cooling module at Mazda MPV. To maintain cooling system you need 11.2 liters of Red coolant.
So, don’t choose different from Red coolant and obey the number of 11.2 liters. Produced in 1999 the 2.0 engine in MPV model will serve longer by this. Every Mazda owner should remember that engines with code FS are quite demanding. Look at Mazda’s requirements and make your 2004 MPV serve longer and with no problem.