• Primarily recommended for late model passenger car and light commercial vehicle engines where enhanced protection of aluminium heat-rejecting surfaces is required. lt can also be used in certain cast iron, heavy-duty diesel engines, particularly, European dry-liner and “no-liner” designs, which operate without supplemental coolant additives(SCAs).
• GS/AF Coolant is a coolant concentrate designed to be mixed with clean water. lt is not a pre-diluted product. For optimum year-round protection a concentration of 50 percent solution of GS/AF Coolant in water is recommended.
• Freezing and boiling protection provided by various concentrations of GS/AF Coolant are as follows:

• Meets ASTM D 3306