It’s important to use 7 liters of coolant which has Green color. Otherwise 480 made in 1992 won’t serve you long enough. In 1989 the company produced vehicles with 1.7 engine having code of B18E. Only exact type of antifreeze will suit Volvo 480 cooling system. You should be careful at choosing liquids for Volvo especially for vehicles having 2.0 motor.
It will be advantageous to follow Volvo’s rules for 1992 480 service. If you choose other than Green coolant or use less than 7 liters, you can’t expect normal work. A lot of B18E motors are used long in Volvo cars but only with good service. Providing you keep the rules 1.7 motor installed in 480 of 1990 year will be long lasting.