PEAK Fleet Charge SCA Precharged Coolant/Antifreeze Concentrate 1 Gallon — Heavy‑Duty SCA Protection, Flexible Dilution

PEAK Fleet Charge SCA Precharged Coolant/Antifreeze Concentrate (1 gallon) is a supplemental coolant additive (SCA) enriched antifreeze concentrate formulated to protect heavy-duty diesel, gasoline and natural gas engines when mixed to the proper strength.

This concentrated formula from PEAK is designed for fleet and commercial applications where supplemental coolant additives are required. The concentrate allows technicians to blend the correct coolant-use ratio for local climate and system specifications. It arrives precharged with SCAs that help address the corrosion and deposit-control needs commonly found in heavy-duty cooling systems, while offering flexibility for dilution or topping up existing coolant.

How do I use this concentrate in a heavy-duty cooling system?

Mix PEAK Fleet Charge concentrate to the manufacturer-recommended ratio for your engine and climate — commonly 50/50 when paired with water — or follow the equipment maker's coolant specification. For systems that already require additional SCA, this product supplies those additives so you don’t need a separate SCA treatment.

• Blend with deionized or distilled water for best corrosion control and freeze protection.
• Follow engine OEM dilution and SCA intervals; test coolant concentration with refractometer or test strips.
• Top off or perform a full flush and fill based on system condition and service schedule.

What engines and vehicles is this coolant compatible with?

PEAK Fleet Charge is formulated to work in heavy-duty diesel, gasoline, and natural gas engine cooling systems where supplemental coolant additives are required or recommended. It’s intended for commercial vehicles, off-highway equipment, and fleet applications that demand long-lasting protection when properly mixed.

• Heavy-duty diesel engines in trucks, buses, and trailers.
• Gasoline and natural gas fleet vehicles meeting heavy-duty coolant specs.
• Construction and agricultural equipment that require SCA protection.

What protection does the product provide against corrosion, freezing and boil-over?

The precharged SCA concentrate supplies corrosion inhibitors and deposit control agents that help protect cylinder liners, water pumps, and other metal surfaces when diluted to the correct concentration. When mixed per label instructions, it contributes to both freeze and boil-over protection consistent with typical glycol-based engine coolants.

• Corrosion inhibitors targeted for heavy-duty metal alloys and cooling system components.
• Improved deposit control to help maintain heat transfer efficiency.
• Freeze and boil-over resistance when diluted to recommended ratios.

How long will this concentrate’s protection last, and how do I maintain it?

Service life depends on engine type, operating conditions, and maintenance practices. When mixed and maintained according to OEM guidance, the SCA precharged formulation is designed to support long service intervals, but periodic coolant testing and scheduled SCA replenishment (if applicable) are recommended to sustain protection.

• Follow equipment OEM intervals for coolant analysis and SCA replenishment.
• Monitor coolant condition with standard tests (pH, freeze point, inhibitor levels).
• Replace or top up with the same chemistry to avoid compatibility issues.

Who is this for: PEAK Fleet Charge SCA Precharged Coolant/Antifreeze Concentrate (1 gallon) is intended for fleet managers, heavy-equipment technicians, and maintenance professionals who need a flexible, SCA-enriched concentrate to mix to specification for diesel, gasoline or natural gas engines. Choose this product if you require supplemental coolant chemistry in concentrated form for controlled dilution, correct SCA levels, and compatibility with heavy-duty cooling systems. For convenience options, PEAK also offers prediluted 50/50 SCA precharged coolants when ready-to-use solutions are preferred.