Mobil Delvac™ Extended Life Coolant/Antifreeze

Providing corrosion protection of all cooling metals

Mobil Delvac Extended Life Coolant/Antifreeze is a 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 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 Coolant/Antifreeze eliminates the need for Supplemental Coolant Additives (SCAs) as required when using conventional coolants.

Mobil Delvac™ Extended Life 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% mixing with conventional coolant technologies, with no detrimental effect to corrosion protection or reducing the extended life properties
  • Fully compatible with other quality Organic Acid Technology (OAT) and Nitrited Organic Acid Technology (NOAT) heavy-duty extended life coolants
  • Non-abrasive 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 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

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  

Concentration
Protects From

 

Freezing Down To


Boiling Up To*

40


-24°C/-11°F


127°C/261°F


50


-37°C/-34°F


129°C/265°F


60


-52°C/-62°F


132°C/270°F


Property
ASTM Test Method
Typical Values For Mobil Delvac Coolant/Antifreeze

Specific Gravity (60/60˚F)


D1122


1.130 – 1.141


Freezing Point, 50 Vol. %, °F
D3321 or D1177 -34 °F

Boiling Point, 50 Vol. %, °F*


D1120


265 °F


PH, 50 Vol. %


D1287


8.0 – 9.0


Reserve Alkalinity


D1121


8.0 – 12.0


Foam Test


D1881


150 ml./5 sec., Max


Color


Visual


Red


*Using a 15 PSI Pressure Cap
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