The 55 gallon Castrol Heavy Duty Radicool SF-O Nitrate Free Antifreeze 50/50 is a Nitrite-Free Radicool SF-O from Castrol based on Nitrite-Free OAT technology, formulated for use in heavy-duty diesel. It is supplied as ready to use straight from the container with no mixing required and provides nitrite-free corrosion protection.

• Brand: Castrol
• Product Type: Radicool SF-O
• Color / Formula: Nitrite-Free
• Formation: Nitrite-Free OAT
• Type: Heavy-Duty Antifreeze
• Dilution: 50/50 Prediluted
• Container Size: 55 gallon
• Pack Size: 55 gallon
• Vehicle Compatibility: Heavy-duty diesel
• Vehicle Makes: Heavy-duty diesel
• Protection Features: Nitrite-free corrosion protection
• Specification / Performance Level: ASTM D6210

• Class 6–8 heavy-duty trucks
• Commercial diesel engines
• Construction and agricultural equipment
• Stationary diesel generators
• Fleet semi-trucks and tractor-trailers

Compatible with nitrite-free systems

This product meets the following specifications: ASTM D6210. Keep out of reach of children and pets. Dispose of used coolant in accordance with local environmental regulations — do not pour down drains or onto the ground.