Castrol Anti-Freeze SF is a concentrate long-life engine coolant based on a monoethylene glycol fluid combined with neutralized organic acid technology (OAT). The technology is also free from Silicates, Amines, Nitrites, Phosphates and other inorganic inhibitors.
Castrol Antifreeze SF-O provides outstanding corrosion protection and cooling performance in Engines employing cast iron and or aluminum and also in cooling systems with aluminum alloys.
Specifications: MB Page 325.3; Deutz ; Renault ; Scania ; Cummins; Caterpillar.

Castrol Anti-Freeze NF is a fully formulated, corrosion inhibited, ethylene
glycol coolant concentrate. It is a superior, heavy duty diesel and passenger car engine coolant, formulated to provide excellent corrosion protection for modern engine alloys found in radiators, water pumps and cylinder blocks and heads. Castrol Antifreeze NF is a nitrite, phosphate and amine free, fully formulated glycol coolant and has been designed to meet the requirements of the major European engine manufacturers. Castrol Antifreeze NF provides an effective heat transfer medium, withstanding the high temperatures found in modern cooling systems, while also providing antifreeze protection to temperatures of -38oC at 50% v/v.
Specifications: Mercedes Benz 325.2, 325.0 (7700.00 ir 7700.10/20); Volkswagen TL-VW774C; MAN 324; Opel B040 0240; Volvo 128 6083; SAAB 6901 599; BMW N600 69.0.