Shell Coolant Longlife Plus Concentrate
Shell Coolant Longlife Plus Concentrate is a premium silicated organic additive technology (Si-OAT) antifreeze and coolant concentrate designed to provide enhanced corrosion protection and extended service life for modern automotive and industrial cooling systems. Developed to meet the requirements of leading OEMs, it combines the long-life benefits of organic acid technology with the fast-acting protection of silicate additives, offering advanced defence for aluminium-intensive engine designs.
A key performance advantage of Shell Coolant Longlife Plus Concentrate is its extended corrosion protection capability. The balanced Si-OAT formulation protects cooling system components made from aluminium, cast iron, steel, copper and other common metals. With a pH of 8.4 and reserve alkalinity of 10.1, the coolant helps maintain chemical stability and neutralise acidic contaminants over extended operating periods.
When diluted to a 50% concentration with water, Shell Coolant Longlife Plus Concentrate provides freeze protection down to –37°C. This ensures dependable protection against freezing damage in cold climates while supporting effective heat transfer and temperature regulation during normal engine operation.
The product meets a comprehensive range of international standards and OEM requirements, including ASTM D3306, D4985 and D6210, BS 6580, Cummins CES 14603, MB-Approval 325.5/325.6, MAN 324 Typ Si-OAT and VW TL-774 G. It also meets AFNOR NFR 15-601, JIS K2234, NC 956-16 and SAE J1034 specifications. These approvals confirm its suitability for a wide range of European and international vehicle applications.
Typical physical characteristics include a density of 1,125 kg/m³ at 20°C, water content of 2.7% by weight and a pink appearance for easy product identification. These controlled properties support consistent mixing performance and reliable cooling system operation.
Shell Coolant Longlife Plus Concentrate must be diluted with clean water before use, following vehicle or equipment manufacturer recommendations for concentration and service intervals.
