Owners manual

QSB4.5 and QSB6.7 Coolant Recommendations and Specifications
Section V - Maintenance Specifications Page V-17
Cooling System Sealing Additives
Do not use sealing additives in the cooling system. The
use of sealing additives will:
• Buildup in coolant low-flow areas
• Plug the radiator and oil cooler
• Possibly damage the water pump seal.
Cooling System Soluble Oils
Do not use soluble oils in the cooling system. The use of
soluble oils will:
• Corrode brass and copper
• Damage heat transfer surfaces
• Damage seals and hoses.