Castrol Heavy Duty Antifreeze with SCA is designed to provide superior engine protection for heavy-duty cooling systems. For years, heavy-duty operators were limited to using low silicate automotive/heavy duty antifreezes that required the addition of a separate supplemental coolant additive (SCA) at initial fill and top off. While this was effective, it resulted in mixing errors when the SCA was added. To prevent SCA variability caused by mixing errors, and improve convenience, Castrol Heavy Duty Antifreeze with SCA was developed. Castrol Heavy Duty Antifreeze is a fully-formulated universal formula antifreeze, having the advantages of low total dissolved solids, low silicate, and incorporates nitrite to provide superior wet sleeve liner cavitation protection.

Since Castrol Heavy Duty Antifreeze with SCA is pre-charged with SCA, there is no need to add additional SCA's at initial fill or when topping off to compensate for SCA dilution. Additional advantages of Castrol Heavy Duty Antifreeze with SCA include its phosphate-free formula that reduces the risk of scale and state of the art corrosion inhibitors, which eliminates the need for expensive deionized water. As an added benefit, Castrol Heavy Duty Antifreeze with SCA meets the performance requirements of most major automotive specifications for conventional antifreeze, allowing operators of mixed fleets to stock one antifreeze for all their vehicles, simplifying fleet maintenance procedures.
Unit of Measure


Specific Gravity @ 60/60 ºF1 N/A 1.110-1.145

Specific Gravity @ 60/60 ºF (Typical Values)

N/A 1.126
Max. Freezing Point, 50% Volume2 N/A -34 ºF

Freezing Point, 50% Volume (Typical Values)

N/A -36 ºF
Min. Boiling Point3 N/A 300 ºF

Boiling Point (Typical Values)

N/A 327 ºF

Min. Boiling Point, 50% Volume

N/A 226 ºF

Boiling Point, 50% Volume (Typical Values)

N/A 226 ºF
pH, 50% Volume4 N/A 7.5-11.0

pH, 50% Volume (Typical Values)

N/A 10.4
Max. Chloride5 N/A 25 ppm

Chloride (Typical Values)

N/A 20 ppm
Reserve Alkalinity6 N/A Report

Reserve Alkalinity (Typical Values)

N/A 7
Max. Water Wt.7 N/A 5 %

Water Wt. (Typical Values)

N/A 3 %

ASH Wt. (Typical Values)

N/A 1 %

Appearance (Typical Values)

N/A Pink

Applications and Recommendations

N/A Castrol Heavy Duty Antifreeze with SCA meets or exceeds the performance requirements of the following specifications:

Heavy Duty

  • TMC RP-329
  • ASTM D-4985
  • ASTM D-5345 (50% Blend)
  • ASTM D-6210
  • Caterpillar
  • Cummins 90T8-4
  • Cummins 14603
  • Detroit Diesel 7SE298
  • Freightliner 48-22880
  • GM 1899M
  • John Deere H24A1
  • Mack Truck
  • MTU
  • Navistar B-1
  • Volvo-GM Heavy Truck
  • ASTM D-3306
  • ASTM D-4340
  • CID A-A-52624
  • Chrysler MS 7170 Section A & B 1-4
  • Ford ESE-M97B44-A Section 3.1.1 & 3.1.2
  • GM 1825M
  • John Deere H24C1
  • SAE J1034

Shipping Note

N/A Shipping will be quoted upon receipt of your order.

  • 1 ASTM D-3306
  • 2 ASTM D-3306
  • 3 ASTM D-3306
  • 4 ASTM D-3306
  • 5 ASTM D-3306
  • 6 ASTM D-3306
  • 7 ASTM D-3306