2019年9月17日 · SDS 484 PRESTONE ® DexCool 50/50 Prediluted Extended Life ANTIFREEZE/COOLANT Date Prepared: 09/17/2019 Page 5 of 8 CONDITIONS TO AVOID: None known INCOMPATIBLE MATERIALS: Avoid strong bases at high temperatures, strong acids, strong oxidizing agents, and materials reactive with hydroxyl compounds.