Delo® – Let’s Go Further™
When it comes to heavy-duty engines, proper lubrication means much more than just a protective film. The right engine oil also helps to disperse soot and control sludge, so as to improve fuel economy and engine durability – and most importantly, minimise operating cost.
Delo®, short for Diesel Engine Lubricating Oil, is formulated with ISOSYN® Technology that combines highly refined base oils with advanced additives to create products that rival synthetic lubricants in critical performance tests.
Delo is more than just a premium line of engine oils. From transmissions to differentials, from wheel bearings to shackle pins, we’ve got your equipment covered.

What is ISOSYN® technology?
ISOSYN Technology is how Caltex formulates its top-tier Delo products. It’s the combination of premium base oil with high performance additives which provide superb parts protection that rivals synthetic performance. All at an outstanding value.
Heavy-duty motor oils
Delo® 400 LE 15W-40 is a premium performance, “low-SAPS” heavy-duty diesel engine oil specifically designed to lubricate a wide range of high speed diesel engines requiring API CJ-4, CI-4 PLUS / SM, or ACEA E9 performance lubricants operating under the most severe service conditions.
Delo® 400 Multigrade SAE 15W-40
Delo® 400 Multigrade SAE 15W-40 is a high performance heavy-duty diesel engine lubricant formulated with advanced ISOSYN® technology and specifically designed for a wide range of diesel and gasoline engines requiring an API CI-4 PLUS, CI-4, SL, ACEA E7 or JASO DH-1 performance lubricant.
Delo® Silver are monograde heavy-duty diesel engine oils designed to lubricate engines requiring API CF or SF performance lubricants. The level of alkaline reserve makes it suitable for use with high sulfur fuels at appropriate oil drain intervals.
Available in SAE 30W, 40W and 50W.
Coolants/Antifreezes
Delo® ELC Antifreeze / Coolant
Delo® ELC Antifreeze/Coolant products are single phase, ethylene glycol based products available in various dilutions that are based on patented aliphatic carboxylate corrosion inhibitor technology specifically formulated for heavy duty cooling system applications that require nitrite.
Greases
Delo® Grease ESI is a technically advanced, extended service premium grease for a wide variety of on-highway and light duty off-road applications. It is formulated with highly refined base stocks, a lithium complex thickener, rust and oxidation inhibitors, and extreme pressure and tackiness additives.
Available in NLGI grade 2.
Starplex® 2 is a high performance multipurpose EP industrial and automotive grease designed for a wide range of applications, including wheel bearing and chassis lubrication.
Starplex 2 is formulated with high quality ISO 220 mineral base oils, a tough lithium complex thickener and rust and corrosion inhibitors, combined with EP and tackiness additives to provide robust protection.
Caltex Black Pearl® Grease EP is a multipurpose, extreme pressure, waterresistant grease. It is formulated with highly refined base stock, a polyurea thickener, and rust and oxidation inhibitors. It is black in color and smooth and buttery in texture. Does not contain solid lubricants such as molybdenum disulfide or graphite.
Ultra-Duty® Grease is a high performance multipurpose industrial and automotive grease, designed for use in very wet, muddy or dusty environments where oil film strength, high adhesion and excellent sealing properties are required to protect in high shock load conditions. Ultra-Duty Grease has a high viscosity mineral oil base and contains a lithium thickener with special extreme pressure additives and is highly adhesive to optimise wear, rust and oxidation resistance.
Transmission fluids
Multigear® S SAE 75W-90 is a premium performance, synthetic, EP gear lubricant meeting API GL-5 and MT-1. It is designed to provide excellent year-round performance and protection in automotive gear applications over a very wide temperature range and under extended drain operation.
“Limited Slip” Automotive Gear Oil
High performance, EP automotive gear oil specifically designed for “limited slip” rear drive differentials, particularly those of ZF design with multiplate clutches. Its special friction properties help to provide smooth, noise free operation of and extended life of these units.
“Limited Slip” Automotive Gear Oil
High performance, EP automotive gear oil specifically designed for “limited slip” rear drive differentials, and conforms to API GL-5 service designation. Its special friction properties help to provide smooth, noise free operation and extended life of multiplate clutches in limited slip differentials (LSDs).
Translube® LD SAE 80W is a premium performance, mild EP, automotive gear lubricant specifically designed to meet Mercedes-Benz Sheet 235.5 requirements for service in heavy-duty vehicle manual transmissions. Suitable also for other light and heavyduty manual transmissions for which mild EP gear lubricants are specified.
Translube® LD SAE 90 is a premium performance, mild EP, automotive gear lubricant specifically designed to meet Mercedes-Benz Sheet 235.5 requirements for service in heavy-duty vehicle manual transmissions. Suitable also for other light and heavy-duty manual transmissions for which mild EP gear lubricants are specified.
Gear lubricants
Delo® Gear ESI® are premium grade automotive gear lubricants designed for gears operating under severe temperature and load conditions, and whose SAE 80W-90 viscosity grade offers extended-drain performance comparable to leading synthetics.
Available in viscosity grades SAE 80W-90 and SAE 85W-140.
Multigear® S SAE 75W-90 is a premium performance, synthetic, EP gear lubricant meeting API GL-5 and MT-1. It is designed to provide excellent year-round performance and protection in automotive gear applications over a very wide temperature range and under extended drain operation.
Pinnacle® EP are a range of high performance synthetic extreme pressure (EP) gear lubricants. They are designed for use in a wide range of industrial gear applications and centralised lubrication systems, where severe conditions such as heavy load, high temperatures and shock load conditions are present.
Pinnacle EP lubricants are formulated with a combination of polyalphaolefin and synthetic ester base fluids and a range of advanced additives designed to offer robust EP protection, resist wear, corrosion, rust and promote reliable thermal and oxidation stability.
These products are available in ISO VG 150, 220, 320, 460 and 680 grades
“Limited Slip” Automotive Gear Oil
High performance, EP automotive gear oil specifically designed for “limited slip” rear drive differentials, particularly those of the Borg Warner “cone clutch” design whose special friction properties provide smooth, noise free operation and extended life of these units.
“Limited Slip” Automotive Gear Oil
High performance, EP automotive gear oil specifically designed for “limited slip” rear drive differentials, particularly those of ZF design with multiplate clutches. Its special friction properties help to provide smooth, noise free operation of and extended life of these units.
“Limited Slip” Automotive Gear Oil
High performance, EP automotive gear oil specifically designed for “limited slip” rear drive differentials, and conforms to API GL-5 service designation. Its special friction properties help to provide smooth, noise free operation and extended life of multiplate clutches in limited slip differentials (LSDs).