Delo® Heavy-Duty PerformanceFor the Mining Industry

Reliability & Durability Are Our Priority.

Chevron lubricants stand for one thing above all else: reliability. Properly lubricating the inside of a heavy-duty diesel engine requires more than just creating a protective film. Delo heavy-duty engine oils provide excellent soot dispersancy, wear protection and sludge control to guard against loss of engine life and help reduce fuel and oil consumption. Additionally, the Delo family of products delivers integrity and performance as proven by various bench testing results. Delo’s industry-leading lubricants have logged countless hours providing superb protection to diesel engine parts and key equipment components so your mining equipment can go further.

Let’s Go Further in the Mining Business with Delo.

DELO® IS BUILT FOR THE MINING INDUSTRY

As your lubrication partner, we strive to keep your comprehensive fleet of equipment running reliably, help minimize operating costs and maximize performance. This includes diesel engines, transmissions, final drives, hydraulic systems, pins and bushings, draglines and generators.We understand the challenges facing mining vehicles, equipment, components and sites today:

• New engine technology development

• Multiple fuels (diesel, biodiesel, dual-fuel and natural gas)

• Extending oil and coolant-drain intervals

• Multiple critical component lubrication requirements

• Consolidation of lubricant products

• Energy efficiency

• Emission standards

Count on Chevron’s industry experience, technology leadership and the Delo family of premium products to help you stay ahead of these challenges and protect and maximize the life of your key equipment and vehicles.

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The Delo difference?

ISOSYN Technology. It helps deliver performance, protection, and durability to help maximize equipment reliability.Chevron uses ISOSYN Technology to formulate its top-tier Delo products. Premium base oils with high-performance additives, combined with our formulation expertise, provide superb protection for diesel engine parts – at an outstanding value.

Delo® with ISOSYN® Technology Protects Engine Parts.

ADVANCED FORMULATIONS

Superb Parts Protection

Delo with ISOSYN Technology protects critical engine parts to help maximize engine and equipment life.

Delo with ISOSYN helps:• Extend service protection

• Maximize engine durability and life

• Minimize operating costs

ISOSYN Technology

Premium Base Oils High PerformanceAdditives

Chevron Formulation Expertise

+

=

+

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Delo® Heavy-Duty Motor Oils Provide World-Class Protection.

PREMIUM ENGINE OILS

Delo 400 oils are formulated to provide superb diesel engine parts protection and performance in severe operating conditions experienced by mining equipment.

For decades, Chevron Products Company, a division of Chevron U.S.A. Inc. has been committed to helping your vital engine parts and your business operate efficiently.

Delo 400 LE SAE 15W-40 with ISOSYN® Technology helps:• Provide extended service protection• Minimize operating costs• Maximize engine life• Protect your equipment investment

Delo 400 LE SAE 15W-40 exceeds most industry and engine manufacturers’ performance requirements.

• API CJ-4 / CI-4 Plus / CI-4 / CH-4 / SM• ACEA E9• JASO DH-2• Cummins CES 20081• Volvo VDS-4• Mack EO-O Premium Plus• RENAULT RLD-3• CAT ECF-3 / ECF-2• DD93K218• Daimler MB-Approval 228.31• MTU Category 2.1• MAN M 3575• Deutz DQC III – 10LA

Helping your equipment and business go further, we have the proven lubrication products to fit your needs. Count on superb quality, extended service protection, and outstanding performance.

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Delo® Heavy-Duty Motor Oils Provide World-Class Protection.We operate 39 large 400-ton mining haul trucks 22 hours a day. Delo has helped us achieve close to 22,000 hours of engine life with no overhauls. It’s been a critical part of our maintenance program.

Scott Jackson

Senior Maintenance Planner

ASARCO Ray Copper Mine

Delo® 400 Offers a Wide Range of Products for Excellent Engine Reliability.

IMPROVED CUSTOMER RELIABILITY

Delo 400 XLE Synblend SAE 15W-40

Delo 400 SD SAE 15W-30

Delo 400 XLE Synblend SAE 10W-30

• Formulated with ISOSYN® Technology • For use in severe climate or operation• Excellent oxidation control performance• Superb piston deposit control• Extended drain-interval capability• Very good cold-weather pumpability• Meets the widest range of OEM specifications

• Formulated with ISOSYN Technology• Offers heavy-duty performance• Suitable for stop-and-go applications • Delivers excellent oil oxidation resistance• Meets Cat ECF-3 specifications• Provides acceptable fuel economy performance

versus SAE 15W-40 engine oils• Offers higher starting base oil viscosity than

SAE 10W-30 engine oils

• Formulated with ISOSYN® Technology• Synthetic blend formulation for newer,

low-emission engines• Cost-effective fuel efficiency performance• Meets latest North American and European

on- and off-road specifications• Meets Cat ECF-3 specification• Meets MTU Category 2.1 OEM specifications• Extended drain-interval capability• Excellent cold-weather pumpability

Delo® Provides Excellent Oil Oxidation Resistance Versus Synthetic Blends.

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BENCH TESTING PERFORMANCE

In the Caterpillar Micro-Oxidation Test (CMOT), Delo showed superior performance at resisting oxidation compared to leading synthetic-blend engine oils.

Superior performance in bench testing may not necessarily correlate to superiority of performance in the field.

Robust Bench TestingEvery day, your mining equipment can put heavy-duty engine oils to the test with extreme operating conditions, extended oil-drain performance and high loads to ensure on-time production work. Delo goes further to prove its value across your diesel equipment.

Test ConditionsDeposit formation at 230°C (tested at Southwest Research Institute)

ResultsDelo 400 LE SAE 15W-40 results indicate excellent oil-oxidation resistance versus numerous competitor synthetic-blend HDMOs.

Test ApplicationIndicates the oil’s ability to resist oxidation that can result in piston crownland deposits.

Caterpillar Micro-Oxidation Test (CMOT)

Bet

ter

Min

utes

0

50

100

150

200

250

300

350

400

PetroCanadaDuron E XL

Synthetic Blend SAE15W-40

CitgoCitgard 700SAE 15W-40

MobilDelvac EliteSAE15W-40

CastrolHypuron

SAE15W-40

ConocoPhillipsGuardol ECTSAE 15W-40

ShellRotella T5

SAE 10W-40

Delo400 LE

SAE 15W-40

Statistically no different from Delo 400 LE SAE 15W-40 performance

Statistically different from Delo 400 LE SAE 15W-40 performance

Deposit formation at 230ºCSouthwest Research Institute

Synthetic BlendsSynthetic Blends

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After 21,000+ hours of operation in our Bell articulated mining dump truck, Delo ELC has protected our cooling system against liner pitting, corrosion and scale deposits while operating in very hot and dusty conditions.

Theo Wilcox

Technical Manager, Frasier Alexander Mining

Delo® ELC Protects All Types of Cooling Systems.

MAXIMUM PROTECTION FOR COOLING SYSTEMS

Producing an enormous amount of heat, heavy-working diesel engines in mining vehicles and equipment require good cooling-system protection and maintenance.

Delo Extended Life Coolants Deliver High Performance and Value.Keeping your engines operating efficiently requires a high-performing, extended life coolant – plus a good coolant maintenance program. Delo ELC Antifreeze/Coolant Premixed 50/50 has a proven track record for high performance.

Delo Extended Life Coolants deliver optimum engine performance and dramatically simplify the way cooling systems are maintained. Our patented corrosion inhibitors maximize hardware parts performance and heat transfer over the life of your engine. That’s protection that has stood the test of time through countless hours of performance.

Compared to conventional coolants, Delo Extended Life Coolants can help minimize operation costs and maximize your engine life.

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Delo® TorqForce Fluids Provide Long-Term Performance.

HYDRAULIC, TRANSMISSION, AND DIFFERENTIAL FLUIDS

Protecting transmissions, hydraulics and differentials is critical to achieving total equipment reliability.To keep your mining equipment operating at high efficiency takes premium products to help ensure superb protection. Delo transmission and hydraulic products provide long-term performance.

Delo TorqForce fluids are engineered for long life and superb oxidation resistance. They are formulated with special additive chemistry that allows for ultra-fine filtration which provides exceptional fluid cleanliness and equipment reliability performance. They meet a wide range of OEM specifications including Caterpillar, Komatsu, Allison Powershift, Dresser Rand, and others.

Delo TorqForce fluids offer excellent friction retention, wear control, seal compatibility, oxidation stability and stay-in-grade viscosity performance.

ISOCLEAN® Certified Delo TorqForce products are available from Chevron ISOCLEAN Certified Providers.

Product Mining Equipment Component Application

Delo TorqForce SAE 10W Hydraulics

Delo TorqForce SAE 30Transmission/Hydraulics/ Wet Brakes/Torque Converters

Delo TorqForce SAE 50 Differentials

Delo TorqForce SAE 60 Differentials

Delo TorqForce MPTransmission/Hydraulics/ Wet Brakes/Torque Converters

Delo TorqForce Syn SAE 5W-20

Transmission/Hydraulics/Differentials/Wet Brakes/Torque Converters

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For gears and bearings, Chevron Final Drive Oil SAE 60 provides excellent final drive protection and extended-drain performance, and achieves low wear rates.Chevron Final Drive Oil SAE 60 is formulated with special anti-wear compounds to protect gears and bearings of final drive and axle compartments from various modes of failure, while maintaining full-metal and seal compatibility. It’s designed to provide excellent lubrication performance for differential and final drives that do not contain friction materials.

Chevron Final Drive Oil SAE 60 delivers:• High load strength to protect critical gear performance

• Caterpillar FD-1 specification performance

• Excellent corrosion protection in humid environments

• High thermal and oxidation stability protects against viscosity increase and deposit formation.

Improved Productivity with Chevron Final Drive Oil SAE 60• Helps minimize downtime and maintenance costs by

providing excellent long-term wear protection

• Excellent thermal stability in high-temperature applications eliminating the need for expensive synthetic products

• Longer drain intervals are possible compared to traditional SAE 50 oils, when using a used-oil analysis program

• Capable of up to 6,000 hours of performance, when following OEM guidelines and utilizing a used-oil analysis program

Macro Pitting Performance of Chevron Final Drive Oil SAE 60 versus TDTO TO-4 Drive Train Oil SAE 50 in Final Drive Axles

Chevron Final Drive Oil SAE 60 Delivers Value.

Macro Pitting Gear Performance

Hou

rs to

4%

Mac

ro P

itti

ng

Bet

ter

0

200

400

600

800

1000

TDTO TO-4SAE 50

Chevron Final Drive OilSAE 60

2.5XBetter

macro pittingprotection versus

TDTO TO-4 SAE 50as shown in the test

FINAL DRIVE PERFORMANCE

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Mining Hydraulic Performance.

PREMIUM HYDRAULICS

By using high premium hydraulic fluids, productivity and fuel efficiency can be improved relative to traditional hydraulic oils as shown in Figure 1. These improvements have been measured in side by side testing versus standard type of hydraulic oils and show up to a 6.2% increase in productivity (material moved per hour) and as much as a 4.5% increase in fuel efficiency.

Figure 1: Results of a field test showing a side by side comparison of synthetic multigrade shear stable technology and traditional hydraulic fluids.

* Productivity and fuel efficiency when compared to traditional or single grade hydraulic oil as shown in Chevron field tests.

Productivity and Fuel Effeciency in Hydraulic Excavators

7.0%6.0%5.0%4.0%3.0%2.0%1.0%0.0%

Gai

n in

Effe

cien

cy

Clarity Synthetic AW

2.0%3.0%

4.5%

6.2%

Productivity Fuel EffeciencyRando HDZ

Hydraulic Product Application

Clarity Synthetic AW Synthetic Ashless Hydraulic Fluid that is environmentally friendly and provides excellent productivity performance

Clarity AW Hydraulic Ashless Hydraulic Fluid that is environmentally friendly and provides excellent oxidation performance

Rando HDZ High VI Hydraulic Fluid that provides excellent productivity performance and potential energy efficiency

Rando HD Good quality hydraulic fluid used for most traditional hydraulic applications.

Chevron has a complete family of hydraulic oils that can help minimize costs and create a material improvement in productivity.

ISOCLEAN® Certified Clarity® and Rando® hydraulic products are also available from ISOCLEAN Certified Lubricant Providers.

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Delo Heavy Duty EP Formulated to provide extended service grease protection for mining equipment that does not require moly, Delo Heavy Duty EP provides excellent load-carrying capability, superb water washout performance, and protects against shock loading. It has been specifically engineered to grease a wide range of off-road equipment and help customers consolidate to one grease throughout their operation without sacrificing protection or performance.

Delo Heavy Duty Moly 5% EPEngineered with a lithium complex thickener and heavy base-oil viscosity plus 5% moly, Delo Heavy Duty Moly 5% EP helps protect against severe shock load, water washout, and high-temperature applications.

Delo Heavy Duty Synthetic Moly 5% EP Engineered with a lithium complex thickener and medium synthetic base-oil viscosity plus 5% moly, Delo Heavy Duty Synthetic Moly 5% EP should be used in severe cold-weather environments for pins and bushings. It helps protect against severe shock load, high-stress conditions, and water washout.

Delo® Heavy-Duty Greases Are Engineered for Mining Operations.

24/7 PERFORMANCE

To help your mining equipment go further, it’s important that every part operate smoothly. Delo’s premium grease products are formulated to provide high performance and long-life protection, no matter what your mining equipment encounters on the job.

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MINING HAUL TRUCK COVERAGE

Delo® Products Protect Your Mining Haul Trucks.BUMPER TO BUMPER.

Delo heavy-duty engine oils, drive-train fluids, final drives, greases and extended-life coolants are specially formulated to meet the intense demands your vehicles and key equipment face.

Get Delo protection where you need it most. At Chevron, we have a history of heavily investing in research and development to ensure your vehicles and equipment get the utmost protection from bumper to bumper. We’re so confident about the outstanding quality of Delo products that we offer a bumper-to-bumper warranty you may not find from other manufacturers.

Bearings and Grease Points

Delo Heavy Duty EPDelo Heavy Duty Moly 5% EPDelo Heavy Duty Synthetic Moly 5% EP

Hydraulic System

Delo TorqForce SAE 10W (CAT TO-4)Delo TorqForce Syn SAE 5W-20Rando® HDZDelo 400 10WUrsa® Hydraulic 10W

Transmissions

Delo TorqForce SAE 30 (CAT TO-4)Delo TorqForce MPDelo TorqForce Syn SAE 5W-20Delo Trans ESI SAE 40 (Manual)Delo Syn ATF HD (Automatic)Delo 400 40 (Hydrostatic)

Differentials & Gear Drives

Delo TorqForce SAE 30 (CAT TO-4; Komatsu recommended)Delo TorqForce SAE 50 (CAT TO-4)Delo TorqForce SAE 60 (CAT TO-4)Chevron Final Drive SAE 60 (CAT FD-1)Delo Syn-Gear XDM SAE 75W-90 (API GL-5/MT-1)Delo Gear ESI® 80W-90 (API GL-5/MT-1)

Coolant System

Delo ELC Premixed 50/50Delo XLC Premixed 50/50

Engine Crankcase

Delo 400 XLE Synblend SAE 15W-40Delo 400 LE 15W-40Delo 400 XLE Synblend SAE 10W-30Delo 100 40 (DDC 71, 92, 149 2 Cycle Engines)

ISOCLEAN® Certified products also available for all off-road equipment. Check with your local ISOCLEAN Certified Lubricant Provider.

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Large mining excavators work in the harshest environments and require premium lubricants and coolants to achieve high-level reliability and performance at the lowest total operating costs. The Delo family of lubrication products has you covered with outstanding protection in diesel engines, transmissions, gears and coolant systems. Choosing the proven performance of Delo quality lubricants supports an operator’s need for optimal reliability and performance under all operating conditions and for long periods of time. This could mean a higher return on investment, hour after hour.

MINING EXCAVATOR FULL PROTECTION

Delo® Protects Large Mining Excavators.BUMPER TO BUMPER.

Hydraulic System

Delo TorqForce SAE 10W (CAT TO-4)Delo TorqForce Syn SAE 5W-20Rando® HDZUrsa® Hydraulic SAE 10W

Bearings and Grease Points

Delo Heavy Duty EPDelo Heavy Duty Moly 5% EPDelo Heavy Duty Synthetic Moly 5% EP

Coolant System

Delo ELC Premixed 50/50Delo XLC Premixed 50/50

Engine Crankcase

Delo 400 XLE Synblend SAE 15W-40Delo 400 LE SAE 15W-40Delo 400 XLE Synblend SAE 10W-30Delo 400 SD SAE 15W-30

Differentials and Gear Drives

Delo Syn-Gear XDM SAE 75W-90Delo Gear ESI SAE 80W-90Delo TorqForce SAE 50 (CAT TO-4)

Transmissions

Delo TorqForce SAE 30 (CAT TO-4)Delo TorqForce MP (CAT TO-4M)Ursa Hydraulic SAE 10W (Hydrostatic)

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ISOCLEAN® Certified Lubricants

CLEAN LUBRICANTS

Particle contamination is the number one cause of lubricant related wear in equipment components. Starting with a lubricant that is certified to meet the equipment manufacture’s fluid cleanliness requirement is the vital first step in maximizing equipment component service life.

Chevron ISOCLEAN Certified Lubricants have been engineered to meet the required ISO Cleanliness fluid requirements at the point of delivery to minimize the challenges with on-site filtration.

Chevron’s network of ISOCLEAN Certified Lubricant providers ensure target ISO Cleanliness codes are on specification at point of delivery as well provide solutions for on-site management of fluid cleanliness.

CERTIFIEDLUBRICANTS

Chevron offers a wide range of ISOCLEAN Certified Lubricants for the mining industry including:

Delo® 400 LE SAE 15W-40

Delo TorqForce

Chevron Final Drive SAE 60

Clarity® Synthetic AW

Clarity AW

Rando® HDZ

Rando HD

Meropa®

GST®

Cetus® DE

Cetus HiPerSyn

Cetus PAO

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ISOCLEAN® On-Site Services

ON-SITE FILTRATION SERVICES

The performance of your equipment depends on the cleanliness and integrity of the fluid in service. The more sophisticated the equipment, the greater the cost and potential for failure or poor performance due to contaminated fluid systems. Chevron ISOCLEAN Services are a proactive approach to maintaining your systems for peak performance and maximum component service life. ISOCLEAN Services is a solution for meeting system fluid specifications for the following companies: Mining & Construction Equipment Segment: Caterpillar, John Deere, Komatsu, Hitachi and Volvo.

Chevron ISOCLEAN On-Site Service providers can provide:

On-Site Fluid Purification

Removing particle contamination will increase the reliability and the life of the system by minimizing fluid oxidation, maintaining lubricity properties and reducing fluid aeration.

System Decontamination

Removing dirt and water through proper decontamination techniques will extend drains and fills.

Reservoir and Tank Decontamination

Reservoir and tank cleanup is performed by fully trained technicians certified in confined space entry. This service ensures safe and effective contaminant removal and clean oil storage.

Clean System Preparation

Ensures systems are ready for Chevron ISOCLEAN Certified Lubricants to maintain fluid cleanliness levels to the point of equipment fill.

Condition Monitoring and System Audits

Monitoring techniques to ensure the best possible lubrication cleanliness for rotating equipment. Sampling and analysis of lubrication fluids and performing corrective actions when indicated are key factors in maximizing uptime and reliability and extending oil and machine life.

Fluid Dehydration

Vacuum dehydration and centrifugal separation for running equipment, bulk oil storage tanks and operating reservoirs.

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The RbL Program Process1. Understand Your Business Drivers

Before we can recommend a product and service programme for you, we need to understand the obstacles you currently face. How can we help you deliver on your business plan?

• Increase Equipment Uptime • Increase Component Service Life• Improve Maintenance Labour Availability • Learn from Best Practices• Improve Fuel Efficiencies • Minimize Fluid and Filter Usage• Improve Supplier Performance

2. Develop the Right RbL Program for Your Identified Needs

Let a Chevron Lubrication Specialist conduct our Best-in-Class Assessment to identify specific strengths and gaps in your current lubrication program and develop a plan to help you achieve your business goals. The five areas of focus are:

• Product Selection • Product Integrity• Optimized Lubrication Intervals • Lubrication Program Management• Inventory Management and Vendor Performance

The Best-in-Class Assessment can be conducted on a routine basis to track your progress, identify new areas of opportunity and help move your organization toward best-in-class performance.

3. Document the Opportunity

After completing the Best-in-Class Assessment, we use our RbL calculators to quantify the benefit your company could achieve by implementing our RbL Program. We will share the transition project plan and agree on a scorecard to track results and identify appropriate resources and stakeholders.

4. Execute the Plan

Our Chevron Lubrication Specialists can be there to provide the expert knowledge to help your team ‘gear up’ for your new RbL Program. We will help ensure the recommended products, services and equipment are properly implemented on time and in full.

5. Track and Document the Results

On an agreed-upon regular schedule, we will review the RbL Program scorecard to track and document the collective results. We can help identify additional action items or new opportunities to target.

Gear Up with the Reliability-basedLubrication (RbL™) Team.

Chevron’s RbL Program can help you increase equipment uptime and component service life.

RELIABILITY BASED APPROACH

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Best in Class Assessments

Chevron RbL professionals who understand mining equipment conduct reliability-based lubrication assessments to help identify areas for improved performance compared to industry-best peers.

LubeWatch® Used-Oil Analysis

Chevron’s premier program incorporates standardized lubricant sampling and unique online tools to help ensure optimized equipment-drain intervals and performance checks to ensure long equipment life.

Delo Coolant Maintenance Kit

This kit helps ensure long life coolant system protection. It provides easy-to-use tools to monitor optimal Delo ELC Coolant life along with incorporating helpful coolant knowledge information.

SMARTFILL Labels

This system helps maintenance personnel easily identify the correct Chevron lubricants for their equipment via color coding on both the storage and fill-point labels. SMARTFILL labels are weather, heat and oil-resistant, and will apply to most metals, plastics and fiberglass materials.

In addition to providing premium Delo® lubricants, Chevron also offers a wide range of tools, programs and services available for mining customers.To help you achieve best-in-class reliability performance to extend equipment life, increase productivity, and help minimize operating costs, these items include:

Chevron Offers Best-in-Class Tools and Services for Mining.

TOOLS & SERVICES FOR MINING

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IMPROVING ENGINE REBUILD LIFE

Delo® Extends Mine Haul Truck Engine Rebuild Life.

Newmont’s Nusa Tenggara Mine achieves 18,600+ hours of engine life using Delo 400 and Delo Extended Life Coolant.PT Newmont Nusa Tenggara (PTNNT) has operated its Batu Hijau copper-gold mine on the Indonesian island of Sumbawa since 2000. The company’s fleet of 111 Caterpillar® 793 haul trucks runs 24 hours a day, seven days a week, under harsh mining conditions. To protect this significant investment, PTNNT turned to Delo 400 SAE 15W-40 and Delo Extended Life Coolant.

The haul trucks are powered by Cat 3516 engines and typically experience 500-hour oil drains and 12,000-hour coolant service cycles. In late 2011 after 18,600 hours of demanding service, one of the engines was completely torn down and inspected.

After inspecting and rating all the parts of this engine, it was clear that the Delo family of products was meeting the customer’s requirements for engine durability, reliability and reduced operating costs.

Piston

Clean ring grooves and minimal deposits on the crown-land at 500-hour oil drains.

Piston Liner

Almost all of its cross hatching remaining, even after 500-hour oil drains.

We were really impressed with the pristine

condition of the engine components after

18,600+ hours of operation.

Andries Smalberger

Principal Advisor Mine Maintenance

PTNNT

Cam Shaft

Minimal wear, no skidding or abrasions. Cam shaft is in such good condition it could be reused again.

Main Bearings

Minimal wear and in very good condition after 18,600+ hours of use. No visible copper was showing through the main bearings indicating excellent protection provided by Delo 400.

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EXTENDING OIL DRAIN INTERVALS

Delo® Extends Mining Haul Truck Oil Drains and Engine Reliability.

Cam Shaft Connecting Rod Bearings

Minimal wear, no skidding or abrasions with excellent protection even at 500-hour oil drains.

Minimal wear and are still usable after 21,900+ hours of operation.

Piston Piston Liner

Very clean and still usable beyond 21,900+ hours.

Almost all of its cross hatching remaining, even after 21,900+ hours of operation.

Uptime and reliability is

everything, it’s second to

none. Delo 400 is a key

product in helping ASARCO

Ray Mine achieve world class

equipment reliability.

Jerry Martinez

MTU OE Dealer

ASARCO Ray Copper Mine achieves 500+ hour oil-drain intervals and 21,900 hours of engine life using Delo 400.ASARCO Ray Copper Mine operates a fleet of 39 haul trucks, including 21 Liebherr T 282s. These 400-ton ultra-class trucks have 3,600-horsepower engines and operate 22 hours a day, seven days a week, in some of the harshest conditions of the Southwest U.S.

The challenging environment in which these trucks work and the nearly non-stop nature of the operation can stress engines significantly, resulting in costly unplanned maintenance or devastating failures. ASARCO has instituted a stringent preventative maintenance program that includes Delo 400 SAE 15W-40 diesel engine oil.

Chevron and ASARCO agreed to inspect one 20V MTU 4000 engine that had delivered 21,900 hours of service with 500-hour drain intervals. The engine was completely torn down and the findings were impressive.

© 2015 Chevron Canada Limited. All rights reserved. All trademarks are the property of Chevron Intellectual Property LLC or their respective owners.

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