Delo® Trucks & BusesHeavy-Duty ENGINE OILS
Delo means efficiency. Fuel economy without sacrificing engine protection. Save money, and lower emissions. Switch to a Delo fuel economy product to see it for yourself.
Purchase at your nearest Caltex outlet
Our Engine Oils
Delo® 400 MGX SAE 15W-40Mineral Oil
An API CJ-4 heavy duty engine oil specifically formulated for on-highway and off-highway applications using either High Sulfur or Low Sulfur Diesel and can also provide protection for newer compliant low emission diesel engines with Selecti...
Delo® Gold Ultra SAE 15W-40Mineral Oil
A high performance, multigrade, heavy-duty diesel engine oil specifically designed to lubricate a wide range of engines requiring API CI-4 or ACEA E7 performance lubricants. Delo Gold Ultra is formulated with ISOSYN® technology.
Delo® Silver Extra Multigrade SAE 20W-50Mineral Oil
A high performance, multigrade heavy-duty diesel engine oils designed to lubricate engines requiring API CH-4/ SJ performance lubricants and where a customer preference for high viscosity exists.
Delo® Silver Multigrade SAE 20W-50Mineral Oil
A heavy-duty diesel engine oil designed to lubricate engines requiring API CF-4, CF or SG performance lubricants. The level of alkaline reserve makes it suitable for use with high sulfur fuels at appropriate oil drain intervals.
Delo® Silver SAE 50Mineral Oil
A heavy-duty diesel engine oil 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.
Delo® Silver SAE 40Mineral Oil
A heavy-duty diesel engine oil 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.
Delo® Silver MonogradeMineral Oil
A heavy-duty diesel engine oil 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.
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ISOSYN Technology
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History of Firsts
Delo has been delivering advanced engine protection for over 80 years since 1935, with a history of technological firsts and innovation.