Cat® ELC™ ™ (Extended Life Coolant)For all Caterpillar® and most OEM and gasoline engines

P R E V E N T I V E M A I N T E N A N C E P R O D U C T S & S E R V I C E S

Cat ELC Characteristics*

Appearance Strawberry Red

Specific gravity ASTM D1122 1.07

pH (33% solution) ASTM D1287 8.3

Reserve alkalinity ASTM D1121 6

Ash content, % max.

**

ASTM D1119 5.0

Boiling protection with 15 psi radiator cap

50% Cat ELC / 50% water 129°C (265°F)

60% Cat ELC / 40% water (ELC concentrate added) 132°C (270°F)

Freezing protection

50% Cat ELC / 50% water -37°C (-34°F)

60% Cat ELC / 40% water (ELC concentrate added) -51°C (-60°F)

Nitrite 550 ppm

Molybdate 750 ppm

Silicate, % 0

Phosphate, % 0

Amine, % 0

Borate, % 0

Nitrates, % 0

* The values shown are typical values and should not be used as quality control parameterseither to accept or reject product. Specifications are subject to change without notice.

** on 20 ml sample

Developed, tested, and approved by Caterpillar, Cat ELClasts at least three times as long as conventional coolant inCat machines, commercial engines and Cat truck engines.It requires no supplemental coolant additives (SCAs);instead, Cat ELC Extender is added once, at the half-lifepoint of the coolant

Recommended useCat ELC is the coolant used as factory fill worldwide forall Caterpillar machines. It can be used in all Cat and mostOEM diesel and gasoline engines. It exceedsCaterpillar’s EC-1 coolant performance specification(see page 2). Cat ELC exceeds the following specifica-tions: ASTM D6210 and TMC RP329 for heavy duty lowsilicate antifreeze/coolants. It also meets or exceeds theperformance requirements of ASTM D4985 for heavy dutyapplications and ASTM D3306 for automotive applica-tions.

Cat ELC Premixed contains 50% ELC and 50% totallypurified water. It is to be used for initial fill and for top-off. This formula ensures that water quality does notcompromise engine coolant performance and life. WithCat ELC there is no concern about hard water scale or thecorrect mixture of water and concentrate. Cat ELCprovides freeze protection to -37°C (-34°F). Cat ELCConcentrate may be added to further lower the freezeprotection point to -51°C (-60°F).

Cat ELC Extender should be added after 6,000 hours or300,000 miles (500,000 km) of operation, and the systemshould be drained and flushed with clean water after12,000 hours or 600,000 miles (1,000,000 km). Nocleaning agents are needed. If Caterpillar’s S•O•Ssm

Coolant Analysis Program is used regularly, safe operationwith Cat ELC may extend beyond 12,000 hours.

With Cat ELC you can inventory one coolant for yourentire fleet. Contact us for further information concerningcoolants and lubricants.

For North and South America

Full CompatibilityYour entire fleet can benefit from the protection of Cat ELC. It is fully compatible withall brands of diesel and most gasoline engines. After eleven years of extensive testingand commercial experience, there have been no documented failures of coolingsystem components, gaskets, seals or hoses with proper use of Cat ELC.

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Cat ELC

Caterpillar EC-1 Specification

The world’s most stringent standard for heavy duty coolantperformance is the Caterpillar EC-1 Specification.This specification requires that the coolant pass extensive testsincluding:

• Physical and chemical testing• Compatibility characteristics with other coolants• Bench performance testing• Field testing

The EC-1 tests go far beyond the usual ASTM and other industrystandard tests. Unlike other coolant standards, EC-1 requires fieldtesting. To qualify as EC-1, a coolant must be operated for aminimum of 7,000 hours or 350,000 miles (560,000 km) in at leastsix Caterpillar engines. Coolant samples are required every 500hours or 24,000 miles (40,000 km). The sample results mustconform to stringent limits concerning pH, reserve alkalinity,metallic corrosion, contaminants and inhibitor concentration.

At the conclusion of the EC-1 testing, each engine is disassembledand components must meet strict condition requirements. Inparticular, the EC-1 test requires no corrosion or pitting, scale ordeposits on the cylinder liners, radiator core, water pump parts,cylinder head water passages and thermostat housing.

New chemical technology for long life

Cat ELC incorporates an advanced formula technology with organic additivecorrosion inhibitors. Instead of nitrates, silicates, phosphates, borates, andamines, Cat ELC contains mono- and dibasic organic acid salts for maximumprotection of the six basic metal alloys—copper, solder, brass, steel, cast iron,and aluminum—found in most heat transfer systems. Some nitrites andmolybdates are added to help protect the iron components in the coolingsystem, reducing steel corrosion and pitting effects.

Cat ELC contains no phosphates or silicates so hard water deposits arepractically eliminated. The low level of total dissolved solids and absence ofsilicantes extends water pump seal life.

Coolant life in heavy-duty diesel engines is limited by the depletion ofcorrosion inhibitors. In conventional coolants, supplemental coolant additives(SCAs) deplete, so you must add SCAs at every oil change. With Cat ELC,however, additives deplete very slowly—so you don’t need to add any SCAs.

It is important to use a coolant that contains ethylene glycol for two reasons:not only does the ethylene glycol lower the freezing point, it also raises theboiling point of the coolant.

Bemco (the Caterpillar dealer in Botswana) observed enginecomponent life by comparing Cat ELC to a mixture of water and SCAs.The liner on the left – from a Cat 3406 HUEI engine – operated 5,300hours at the Gaborone Mine with this conventional coolant. It hadpitting, which penetrated the liner wall. The liner on the right fromthe same engine ran 10,013 hours with Cat ELC. The coolant side ofthe liner is like new.

Injector sleeves from the same Bemco engine showed similarsuccess for Cat ELC. Note the deposits and severe pitting after5,300 hours with conventional coolant (left) compared with theexcellent condition of the injector sleeve with ELC after 10,013hours of operation (right).

Better protection for longer life

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P R E V E N T I V E M A I N T E N A N C E P R O D U C T S A N D S E R V I C E S

Mixing Cat ELC with otherantifreeze/coolantsWhile Cat ELC is compatible with conven-tional antifreeze/coolants, we recommendyou do not mix the two. Cat ELC isethylene-glycol based for anti-boil andfreeze protection, but its corrosion chemicalsystem is superior to that of conventionalantifreeze/coolants. However, when mixedwith conventional coolant, the extended lifecapabilities are compromised.

If they are mixed, don’t add more than 10%of the conventional coolant. If you exceed10%, treat the system as if it containsconventional coolant or drain and flush thesystem and refill with ELC.

Proper use for optimum results

• Exceeds Cat EC-1 performancerequirements.

• Contains carboxylates, nitrites andmolybdates to protect against cylinderliner/block pitting and cavitation erosion.

• Should be added at 300,000 miles (500,000km) for Cat on-highway trucks and 6,000hours for Cat machines and commercialengines.

• Ensures Cat ELC performance to 600,000miles (1,000,000 km) or 12,000 hours.

Using test kits for Cat ELCThe Contamination Test Kit (223-9116) forCat ELC provides a pass/fail result based oninhibitors present in the coolant sample.Using this kit confirms whether ELCinhibitors are within an acceptable limit forcontinued use of the coolant. If the coolanthas had water or standard coolant added,there may not be enough of the ELCadditives present for adequate protection.

We recommend testing annually forfreeze/anti-boil protection in case water(rather than ELC) has been used for top off.

Cleaning your cooling systemWhen draining ELC from your coolingsystem, just flush the system with cleanwater—no cleaning agents are requiredwhen you drain Cat ELC for a new batch.

Converting to Cat ELCIt’s easy to convert to Cat ELC. If you’vebeen using a conventional heavy-duty,low-silicate antifreeze/coolant, first cleanyour system with Cat Cooling SystemCleaner 6V4511 or 4C4611 or a similarcommercial cleaner at the change interval.

After draining the cleaner, flush the systemthoroughly with water three times toremove the cleaning agent. It is imperativeto remove all the cleaning agent fromthe system. Check hose clamps and bolts fortightness.

Less old coolant for disposalUsed coolant disposal requirements havebecome more stringent and costly in recentyears. Disposal of used coolants can bedifficult and expensive and must be done inaccordance with local or national laws. CatELC reduces coolant disposal volume by50% or more — cutting disposal costs.

12 000

6

®

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Cat Extender for maximum coolant life:

PEHP4036-05 Printed in U.S.A.© 2002 Caterpillar

• Maximizes water pump seal life.

• Eliminates silica gel formation.

• Contains no silicates, phosphates,or borates.

• Allows you to inventory one coolant forentire mixed fleet (can be used in mostOEM diesel, gasoline, and natural gasengines).

• Requires no SCAs (one maintenanceintervention required using CatExtender at coolant mid-life).

• Ensures quality make-up water(Premixed).

• Ensures correct antifreeze-to-water mix(Premixed).

• Eliminates hard water scale and providesoptimal heat transfer.

• Requires no coolant conditioner testkit to check nitrite level.

• Lets you adjust coolant freeze pointtemperature.

• Reduces disposal volume andis recyclable.

• Reduces engine coolant and additivescosts from a minimum of 42% to asmuch as 80% over Cat DEAC.

• Lowers maintenance costs associatedwith SCA addition and coolant changeout intervals.

• May be used as top-off for systems withconventional coolants.

• One coolant for your entire fleet.

Benefits of Cat ELC overconventional coolants

S·O·S SM Coolant Analysis

Protect your investment with S•O•S Coolant Analysis. Level 1 Analysis provides a close look atthe condition of your coolant, including nitrite level, pH, conductivity, visual and odorcharacteristics, freeze protection and water hardness (if conventional coolant is used).

Level 2 Analysis includes all level 1 tests plus spectrographic and electrophoresis analysis. It candetect metal corrosion, build-up of impurities, scaling and other problems before they causedowntime and major repairs. Level 2 Analysis is especially important if you are usingconventional coolants which offer less protection than Cat ELC. Ask us about S•O•S coolantservices.

Cat ELC & ELC Extender ordering information

Part No. Package Size Description

156-2653 Bulk (5,000 Gallons±) Premixed (50/50)5

101-2845 55 Gallons Premixed (50/50)

129-2151 5 Gallons Premixed (50/50)

101-2844 1 Gallon Premixed (50/50)

119-5150 1 Gallon Concentrate*

119-5152 Quart Bottle ELC Extender**

210-0786 1 Gallon ELC Extender**

*Cat ELC Concentrate is used to lower the freezing protection level. To obtain a freeze point of -51° C (-60° F) add one liter (gallon) to each 5 liters (gallons) of Cat ELC 50/50 premix.

**ELC Extender is added at the half life of the coolant; 300,000 miles (500,000 km) for truck engines and 6,000 hours for other engines.

Quantity of ELC Extender Needed at Cat ELC Half-Life*

Approximate Amount Bottles ofCooling System Capacity of Cat ELC Extender** 119-5152 Required

22 to 30 L (6 to 8 gal) 0.50 L (20 fl oz) 1 ⁄ 2

31 to 38 L (8 to 10 gal) 0.75 L (24 fl oz) 3 ⁄ 4

39 to 49 L (10 to 13 gal) 1.00 L (32 fl oz) 1

5 0 to 64 L (13 to 17 gal)1.25 L (40 fl oz) 1 1⁄4

65 to 83 L (17 to 22 gal) 1.60 L (54 fl oz) 1 3⁄4

84 to 114 L (22 to 30 gal) 2.15 L (72 fl oz) 2 1⁄4

115 to 155 L (31 to 41 gal) 3.00 L (96 fl oz) 3

156 to 197 L (42 to 52 gal) 4.00 L (128 fl oz) 4

198 to 243 L (53 to 64 gal) 4.75 L (160 fl oz) 5

* Cat Extender is not required for initial fill or top-off since Cat ELC already contains the appropriate level of all inhibitors.** A clear view strip on the side of the 119-5152 bottle makes measurement easier.

Proper use for health and safety

For information on proper use for health,safety, and environment, please refer to theMaterial Safety Data Sheet (MSDS).

Catepillar MSDS’s are available on the internetat www.catmsds.com. Or, you may request acopy from your local Caterpillar dealer.

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