Mobil Delvac™ Extended Life 50/50 Prediluted Coolant/Antifreeze

Ready-to-use, ethylene glycol-based coolant providing exceptional corrosion protection

Mobil Delvac Extended Life 50/50 Prediluted Coolant/Antifreeze is a ready-to-use, phosphate-free, silicate-free, nitrite-free and borate-free, ethylene glycol-based coolant that is designed to provide exceptional wet sleeve liner cavitation and corrosion protection of all cooling system metals.

Mobil Delvac Extended Life 50/50 Prediluted Coolant/Antifreeze is formulated with organic corrosion inhibitors to provide total cooling system protection for 1,000,000 miles of on-road use (8 years or 20,000 hours of off-highway use). Since the organic corrosion inhibitors do not readily deplete, Mobil Delvac Extended Life 50/50 Prediluted Coolant/Antifreeze eliminates the need for Supplemental Coolant Additives (SCAs) as required when using conventional coolants.

Mobil Delvac Extended Life 50/50 Prediluted Coolant/Antifreeze is recommended by ExxonMobil for use in:

  • All types of heavy-duty diesel, gasoline and natural gas engines
  • Stationary engine applications regardless of fuel type being used
  • Marine cooling systems where freeze protection is needed
  • Mixed fleets where both light-duty and heavy-duty trucks are present

Features and benefits

  • Long service life: 1,000,000 miles of on-road use (8 years or 20,000 hours of off-highway use)
  • Designed for use in engines running EGR, SCR and ACERT technologies that can increase cooling system temperatures
  • Eliminates the cost of SCAs, test strips and manpower required to test the coolant and add SCAs
  • Can accept up to 25 percent mixing with conventional coolant technologies with no detrimental effect to corrosion protection or reduction of the extended life properties
  • Fully compatible with other quality Organic Acid Technology (OAT) and Nitrited Organic Acid Technology (NOAT) heavy-duty extended life coolants
  • Nonabrasive formula can improve water pump seal life
  • Optimal hard water compatibility and reduced hard water scale
  • Provides outstanding long-term elastomer compatibility

Specifications, approvals and technical details

Specifications and approvals  

Mobil Delvac™ Extended Life 50/50 Prediluted Coolant/Antifreeze is recommended by ExxonMobil for use in applications requiring:

  • ASTM D 6210
  • ASTM D 7583
  • Behr Radiator
  • CAT EC-1
  • Cummins CES 14603
  • Detroit Diesel 93K217
  • John Deere H24A2, H24C2
  • MAN 324 Type SNF
  • Mercedes Benz 326.3
  • Mercedes Benz DBL 7700
  • MTU 5048
  • Navistar CEMS-B1-Type IIIa
  • TMC RP 329

It meets the performance requirements of:

  • Volvo/Mack
  • Paccar
  • Phosphate-free requirements of European original equipment manufacturers (OEMs)
  • Silicate-free requirements of Japanese OEMs

Technical details  

Chemical properties  

Property
ASTM Test Method
Typical values
Specific Gravity (60/60°F) D1122 1.070 – 1.090
Freezing Point, 50 Vol. %, °F D3321 or D1177 -34
Boiling Point, 50 Vol. %, °F D1120 265
PH, 50 Vol. % D1287 8.0 – 9.0
Reserve Alkalinity D1121 3.8 – 5.0
Foam Test D1881 150 ml./5 sec., Max
Color Visual Red
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