Mobil Delvac Modern™ Coolant Extreme Ready Mixed

Mobil commercial-vehicle-lube , Malaysia

Ready to use Pre-diluted Coolant/Antifreeze

Product Description

Mobil Delvac Modern Coolant Extreme Ready Mixed is a nitrited ready to use pre-diluted Coolant/Antifreeze formulation for heavy duty and light duty vehicles and equipment. It is formulated with an Organic corrosion inhibitor Additive Technology (OAT).

The product also offers freezing protection down to -36 deg C and increase boiling point of 8 deg C.


Features and Benefits

Mobil Delvac Modern Coolant Extreme Ready Mixed is a heavy-duty, ethylene glycol engine coolant based on OAT technology. It is free of amines, borates, nitrates, phosphates and silicates and contains nitrite and molybdate.  The product provides excellent protection of the metal alloys found in most cooling systems. Being phosphate and silicate free also eliminates the risk of hard water scale.

Note: Do not use in potable water systems.


Recommended maximum service life:

Heavy Duty Diesel On-Road

650,000 km

Heavy Duty Diesel Off-Road

8,000 hours


It is recommended to change the coolant every five years or when above mileages/operating times are reached, whichever comes first.


Advantages and Potential Benefits

Cost Effective

Supplementary Coolant Additives (SCAs) are not required to achieve to achieve maximum service lives listed


Effective protection against corrosion erosion and pitting even on sensitive metals like aluminium

Reduced maintenance

With proper top-up practices regular use of testing and supplemental coolant additives is avoided

Heat Transfer

Silicate free formulations eliminates deposits which may impede heat transfer

Hardware Life

Enhanced water pump life through reduce risk of seal wear

Broad operating temperature range

Protection against winter freeze-up and summer boil-over

Wide Range of Applications

Protects engines where the OEM specifies a nitrite and molybdate coolant. Can be used in heavy duty engines using EGR, DPF or ACERT technologies. Suitable for mixed fleet applications.


While compatible with conventional antifreezes dilution with conventional antifreeze could reduce extended life benefits. ExxonMobil recommend that this product not be diluted by more than 25% with other coolant formulations to maintain performance claims.


Can be stored for approximately 8 years in sealed containers without any effect on the product quality or performance.



• Heavy duty engines where the OEM recommends a silicate free coolant containing nitrite.

• Suitable for mixed fleets of light and heavy-duty trucks, or off-road on-road and marine cooling systems where the OEM requires a silicate free coolant containing nitrite.


The Product is suitable for use in applications where a coolant containing nitrite is recommended by the OEM including*:

• Caterpillar EC-1

• Perkins

• Cummins IS series u N14

• Deutz DQC CB-14

• Volvo

* Always refer to owner's manual for coolant requirement


Properties and Specifications



Color, Visual


Density @ 20C, Kg/l, ASTM D5931


pH @ 20C, ASTM D1287


Reserve Alkalinity to pH 5.5, ml.1NHCL, ASTM D1121


Freezing Point, deg.C, ASTM D3321



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.



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.