For 1988 405 engine it’s necessary to get normal temperature balance. It’s important to use 7.8 liters of coolant which has Red color. Before choosing fluid note that engine code BDZ(XU5M) and volume of 1.6 were installed to your car in 1995. Don’t underestimate the importance of Peugeot’s 1.6 engine cooling system. Only exact type of antifreeze will suit Peugeot 405 cooling system.
It will be advantageous to follow Peugeot’s rules for 1994 405 service. Every Peugeot owner should remember that engines with code LFZ(XU7JP) are quite demanding. If you choose other than Green coolant or use less than 6.6 liters, you can’t expect normal work. Providing you keep the rules 2.0 motor installed in 405 of 1996 year will be long lasting.