Mobil Delvac™ Extended Life Coolant/Antifreeze

Mobil commercial-vehicle-lube , United States

EXTENDED LIFE Coolant/Antifreeze

Product Description

Mobil Delvac™ Extended Life Coolant/Antifreeze is a product for the cooling system that contains inhibitors that provide protection against freezing, overheating, rust and corrosion when used as recommended. Contains monoethylene glycol and organic corrosion inhibitors, OAT technology that allows extending the exchange interval.


Mobil Delvac™ Extended Life Coolant/Antifreeze features a universal free from Nitrite, Nitrate, Phosphate, Borates and Silicates formula. It is recommended for use in all types of light vehicles (cars and vans) and heavy vehicles (trucks, buses, tractors and agricultural machines).


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 (OAT) and Nitrited Organic Acid (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


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

  • ASTM D 6210      
  • Detroit Fluid Specification 93K217
  • MTU 5048
  • ASTM D 7583
  • John Deere H24A1, H24C1
  • Navistar CEMS-B1-Type IIIa
  • Behr Radiator
  • MAN 324 Type SNF
  • TMC RP 329
  • CAT EC­1
  • MB-Approval 325.3           
  • Cummins CES 14603

Meets the performance requirements of:

  • Volvo/Mack
  • Paccar
  • Phosphate­free requirements of European original equipment manufacturers (OEMs)
  • Silicate­free requirements of Japanese OEMs

Protection Table





Freezing Down To

Boiling Up To*


­24 °C / ­11 °F

127 °C / 261 °F


­37 °C / ­34°F

129 °C / 265 °F


­52 °C / ­62 °F

132 °C / 270 °F

*Using a 15 PSI Pressure Cap                        

Chemical Properties


ASTM Test Method

Typical Values For Mobil Delvac Coolant/Antifreeze

Specific Gravity (60/60˚F)


1.130 – 1.141

Freezing Point, 50 Vol. %, °F

D3321 or D1177

­34 °F

Boiling Point, 50 Vol. %, °F


226 °F

pH, 50% Volume Solution


8.0 – 9.0

Reserve Alkalinity, mL


9.0 – 11.0

Foam Test


150 ml. / 5 sec., Max





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


Health and safety

Health and Safety recommendations for this product can be found on the Material Safety Data Sheet (MSDS) @

All trademarks used herein are trademarks or registered trademarks of Exxon Mobil Corporation or one of its subsidiaries unless indicated otherwise.


Exxon Mobil Corporation
22777 Springwoods Village Parkway
Spring TX 77389

1-800-ASK MOBIL (275-6624)

Typical Properties are typical of those obtained with normal production tolerance and do not constitute a specification. Variations that do not affect product performance are to be expected during normal manufacture and at different blending locations. The information contained herein is subject to change without notice. All products may not be available locally. For more information, contact your local ExxonMobil contact or visit
ExxonMobil is comprised of numerous affiliates and subsidiaries, many with names that include Esso, Mobil, or ExxonMobil. Nothing in this document is intended to override or supersede the corporate separateness of local entities. Responsibility for local action and accountability remains with the local ExxonMobil-affiliate entities.