Lubricants for Commercial Fleets, Buses, & Trucks


From stop-and-go city driving to long-haul trucking operations, find everything you need to reduce vehicle downtime and operating costs.

Reduce downtime with superior long-haul reliability

When your fleet is in motion, your business is driving profits. Our goal is to give you the confidence to safety push engines further to help minimise operation costs and maximise performance. As your lubricantion partner, we strive to keep your fleet highly competitive and your costs well in line. 

Explore our range of Delo® heavy-duty engine oils, gear oils, transmission fluids and coolants, which are specifically formulated to meet the intense demands your vehicle face.

Product Categories

Heavy-Duty Engine Oils

Delo® heavy-duty engine oils provide the protection customers need to increase equipment productivity and reduce costly downtime. Delo helps you go further.

Delo® 400 SLK SAE 15W-40

An API CK-4 premium quality “low-SAPS” heavy-duty diesel engine oil specifically designed to lubricate a wide range of high speed diesel engines.

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Relevant brochures

All about Delo 400 MGX

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Delo MGX 400 FAQs

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Infographic on Delo 400 MGX

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Delo Gold Ultra

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Our coolants feature patented organic corrosion inhibitors that are designed to improve heat transfer, reduce operating costs, eliminate the need for supplemental coolant additives (SCAs) and extend the life of both engine and cooling system.

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Learn more about our products to suit your needs.

Extended Life Coolants product list

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Using the right grease helps protect your heavy machinery from extreme temperatures, pressures, and impact, extending reliability and service life and saving you money in the long run.

Gear Oils

Gears running at extreme temperatures and high loads require high-quality lubricants to ensure efficient wear protection for bearings and gears.

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Automotive gear oils range

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Transmission Fluids

Specially formulated to deliver year-round, trouble-free performance under the most severe loads, our transmission fluids deliver exceptional anti-wear protection to promote long transmission life.

Delo® Syn-Trans XV SAE 75W-80

Delo® Syn-Trans XV SAE 75W-80 is a premium synthetic, manual transmission fluid formulated specifically for Volvo iShift and Mack mDrive automated manual transmissions.

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Product recommendation guide

Our premium lubricants have been designed to excel in different industrial, on and off-highway engines and commercial vehicles, delivering reliable engine protection and outstanding performance.

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Interested in optimising your business with Caltex?