Lubricant Specialists since1985
Castrol Heavy Duty 50/50 Pre-Diluted Extended Life Coolant/Antifreeze is a 50/50 mix of Castrol Heavy Duty Extended Life Coolant/Antifreeze and deionized water. Castrol Heavy Duty 50/50 Pre-Diluted Extended Life Coolant/Antifreeze should be used when topping-off cooling systems filled with Castrol Heavy Duty Extended Life Coolant/Antifreeze coolant to ensure proper inhibitor levels are maintained.

Castrol Heavy Duty 50/50 Pre-Diluted Extended Life Coolant/Antifreeze features a patented Organic Acid Technology (OAT) formula that delivers total cooling system protection for 600000 miles of on-road use (6 years or 12000 hours of off- highway use) without the use of Supplemental Coolant Additives (SCAs). The only maintenance required is the addition of a single extender after 300,000 to 400,000 miles of on-road use (3 years or 6000 hours of off-highway use). When required, top-off the cooling system with Castrol Heavy Duty Extended Life Coolant/Antifreeze or Castrol Heavy Duty 50/50 Pre-Diluted Extended Life Coolant/Antifreeze only.

Castrol Heavy Duty 50/50 Pre-Diluted Extended Life Coolant/ Antifreeze is a phosphate-free, silicate-free, nitrite-free and borate-free, globally formulated coolant which uses patented organic acid inhibitors to provide superior wet sleeve liner cavitation and corrosion protection of all cooling system metals. Additional advantages of using Castrol Heavy Duty 50/50 Pre-Diluted Extended Life Coolant/Antifreeze include:
  • Pre-diluted with deionized water. No need to add water at initial fill or when topping-off.
  • Patented formula, with Contamination Tolerant Additives, which can be mixed in any proportion with other coolants with no detrimental effect to corrosion protection, To realize Castrol Heavy Duty 50/50 Pre-Diluted Extended Life Coolant/Antifreeze's maximum protection, contamination levels should be kept below 25%.
  • Eliminates the need for SCAs and coolant filters, saving time and money.
  • Provides superior long-term elastomer compatibility.
  • Phosphate free formula inhibits the formation of hard water scale.
Castrol Heavy Duty 50/50 Pre-Diluted Extended Life Coolant/Antifreeze is recommended for use in the cooling systems of all types of heavy-duty diesel, gasoline and natural gas engines.
Unit of Measure

Specifications

Min. Specific Gravity @ 60/60ºF1 N/A 1.0650

Specific Gravity @ 60/60 ºF (Typical Values)

N/A 1.07
Max. Freezing Point, 50% Volume2 N/A -34 ºF

Freezing Point, 50% Volume (Typical Values)

N/A -34 ºF
Min. Boiling Point, 50% Volume3 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 7.9
Max. Chloride5 N/A 25 ppm

Chloride (Typical Values)

N/A 20 ppm
Reserve Alkalinity6 N/A Report

Reserve Alkalinity (Typical Values)

N/A 3.5
Max. ASH Wt.7 N/A 5 %

ASH Wt. (Typical Values)

N/A 1 %

Color

N/A Red

Applications and Recommendations

N/A Heavy Duty

  • Cat EC-1
  • Cummins 90T8-4
  • Detroit Diesel 7SE298
  • John Deere H24A2/H24C2
  • Mack Truck
  • MTU
  • Navistar B-1
  • ASTM D-5345
  • ASTM D-6210
  • GM 1899M
Automotive
  • ASTM D-3306
  • ASTM D-4340
  • ASTM D-4656
  • GM 1825M

Shipping Note

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

  • 1 ASTM D-6210
  • 2 ASTM D-6210
  • 3 ASTM D-6210
  • 4 ASTM D-6210
  • 5 ASTM D-6210
  • 6 ASTM D-6210
  • 7 ASTM D-6210