For 1995 850 engine it’s necessary to get normal temperature balance. Before choosing fluid note that engine code B5252S and volume of 2.4 were installed to your car in 1994. Don’t underestimate the importance of Volvo’s 2.4 engine cooling system. For Volvo 850 it’s important to have optimal antifreeze inside. To maintain cooling system you need 7.2 liters of Green coolant.
2.3 850 motors of 1996 year will serve more by optimal service. If you choose other than Green coolant or use less than 7.2 liters, you can’t expect normal work. It’s obvious that every B5202S motor needs good service as stated by Volvo in instruction. Look at Volvo’s requirements and make your 1993 850 serve longer and with no problem.