To maintain cooling system you need 7.2 liters of Green coolant. For 1998 S70 engine it’s necessary to get normal temperature balance. There are some conditions in servicing cooling module at Volvo S70. Don’t underestimate the importance of Volvo’s 2.5 engine cooling system. It’s better to choose fluid in combination of 1998 year, 2.4 volume of motor and engine code of B5244S2.
Better buy 7.2 liters of good antifreeze in Green color. It’s obvious that every B5244SG motor needs good service as stated by Volvo in instruction. Look at Volvo’s requirements and make your 1998 S70 serve longer and with no problem. Produced in 1997 the 2.4 engine in S70 model will serve longer by this.