https://me.caltexlubricants.com/en_me/home/products/delo-gold-ultra-sae-15w-40.html

 Delo® Gold Ultra is 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. Formulated with ISOSYN® technology.