PETRONAS Arbor Protective Fluid is a concentrated protective antifreeze and coolant fluid for the engines of tractors, farm machines and earthmoving machinery. PETRONAS Arbor Protective Fluid, based on ethylene glycol, properly diluted provides the utmost performance in terms of antifreeze protection and cooling. PETRONAS Arbor Protective Fluid removes the heat generated by combustion and ensures protection against freezing down to temperatures of -38°C if mixed at 50% with water.