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A. Shell Coolant Longlife concentrate is for automotive, commercial vehicle and off-highway engine cooling-system service where long-life OAT coolant is required.
A. Shell Coolant Longlife concentrate is supplied as a concentrate and is mixed with water at the dilution ratio specified by the engine manufacturer.
A. An OEM Specification is the coolant requirement set by a vehicle or equipment manufacturer (e.g., MB 325.3, VW TL 774-D / G12+). When a coolant lists the code, the coolant manufacturer has developed and tested it to meet the criteria the equipment manufacturer requires. Match the code in your handbook and you have a coolant engineered for your machine.
A. An OEM Approval means the coolant has been formally tested and signed off by the equipment manufacturer and listed on their official approved-products register (e.g., MB-Approval 325.3). An Approval confirms the coolant is recognised by the equipment manufacturer for service use in their machines.
A. Shell Coolant Longlife concentrate carries MAN M324 SNF; Cummins CES 14603; Deutz DQC CB-14; VW TL 774D (G12); Liebherr MD1-36-130; and a Ford specification (verify the specific Ford reference against the current product label).
A. Both are Shell Coolant Longlife OAT coolants with the same OEM-approval set. The concentrate (this product) must be mixed with water at the dilution ratio specified by the engine manufacturer. The RTU (Ready To Use) is pre-diluted and is poured directly into the cooling system as-is.
A. Both are Shell coolants. Shell Coolant Longlife (this product) is the OAT G12-class long-life coolant for extended-service-interval applications. Shell Coolant Extra is the HOAT (Hybrid OAT) silicate-containing coolant — typically for older engines or applications specifying VW TL 774C / G11 chemistry.
A. Long-life coolants — typically OAT or HOAT — provide extended service intervals compared to conventional silicate-based IAT coolants. OAT coolants such as Shell Coolant Longlife are typically rated for up to 5 years or 250,000 km service in many applications, versus 2-3 years for conventional coolants.
A. BS 6580 (UK) and ASTM D3306 (US) are the universal coolant performance standards every reputable coolant meets. They are your baseline check — match the standard your handbook specifies and the coolant is technically suitable for your system. Every coolant on our site lists its BS 6580 and ASTM D3306 classifications.
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