There are some conditions in servicing cooling module at Mazda 929. It’s important to provide cooling for Mazda’s engine with 2.0 liters volume. You may use code of motor MA and volume figure of 2.0 or just tell the 1986 year of production to buy liquid. There is no chance 1985 929 engine will work efficiently with bad cooling. It’s important to use 7.5 liters of coolant which has Red color.
So, don’t choose different from Red coolant and obey the number of 7.5 liters. Providing you keep the rules 2.0 motor installed in 929 of 1984 year will be long lasting. Look at Mazda’s requirements and make your 1985 929 serve longer and with no problem. It’s obvious that every HEE motor needs good service as stated by Mazda in instruction.