ShellZone Multi-Vehicle Extended Life 50/50 Antifreeze & Summer Coolant - 55 Gallon Drum

This is a pre-diluted 50/50 formula, so it comes already mixed and is ready to pour directly into a cooling system — no additional water is required.

At the 50/50 dilution, this antifreeze protects against freezing down to -34°F and boil-over up to +265°F, assuming the cooling system uses a 15-psi radiator cap. A lower-rated cap will reduce the effective upper boil-over protection.

Coolant boiling point rises with system pressure. The +265°F boil-over protection figure is calculated for a pressurized cooling system using a 15-psi radiator cap — vehicles with a lower-pressure cap will have a reduced boiling point threshold.

This pre-mix delivers the same quality features as the Concentrate version. The practical difference is convenience — the 50/50 is already diluted to the correct ratio, eliminating the need to measure and blend with water before use.

This is formulated as a multi-vehicle antifreeze, meaning it is intended to work across a range of vehicle types. For specific compatibility with your vehicle or equipment, review the Technical Data Sheet available for this product.

The 55-gallon drum format is best suited for fleet operations, commercial service facilities, or high-volume applications where large quantities of ready-to-use coolant are needed on a regular basis. Specific storage guidance can be found in the Safety Data Sheet available for this product.