https://www.texacolubricants.com/en_uk/home/learning/about-our-brands/delo.html
Texaco Delo heavy duty engine oils | Texaco Lubricants (uk)
Texaco Delo® premium heavy-duty engine lubricants formulated for maximum engine protection, performance, and efficiency.
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https://www.oronite.com/products-technology/heavy-duty-motor-oils.html
heavy duty engine oils | Chevron Oronite (Global)
Chevron Oronite is a leader in automotive additive products, with expertise in heavy duty engine oil additive technology.
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https://www.ardeca-lubricants.be/en/products/heavy-duty-engine-oil-283/
Heavy duty engine oil - Ardeca Premium Quality Oils
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