Shell HD Phosphate Free Antifreeze / Coolant is a premium quality fully formulated coolant containing supplemental coolant additives (SCAs) to provide complete engine and cooling system protection
■ Service life is typically 200,000–250,000 miles/2–3 years and requires
monitoring and maintaining SCA additive levels
■ Highly stabilized, low silicate formula reduces deposits
■ Meets ASTM D3306, D4985, D6210