Gulf Western products are 100% Australian made and come with a seal of quality guarantee. All products are manufactured under an ISO 9001 quality endorsed management system.

Please note: Many Gulf Western products can be used for various purposes and amongst different applications, so if you are unsure, please contact us on our free hotline number 1800 248 919 for technical advice.

TOP DOG® CK-4 15W-40



SAE Viscosity 15W-40, Diesel rating: API CK-4, CJ-4, CI-4 Plus, Petrol rating: API SN, Caterpillar ECF-3, Cummins 20086, Mack EOS 4.5, Mercedes-Benz sheet 228.31, Volvo VDS 4.5, MTU Type 2.1, JASO DH-2.

IBC – 300058B | 205L – 300058 | 20L – 320058

TOP DOG® CK-4 SAE 15W-40 is a premium, high performance, mineral oil based heavy duty diesel engine oils meeting the latest API CK-4 Heavy Duty Diesel performance specification making it suitable for use in the latest engines produced by major OEMs including Cummins, Caterpillar, Detroit Diesel and Volvo/Mack. TOP DOG CK-4 SAE 15W-40 is also backwards compatible with other API Heavy Duty Diesel performance categories such as CJ-4, CI-4 Plus, CI-4 and CH-4.  Being a low SAPs oil, TOP DOG CK-4 SAE 15W-40 provides protection for exhaust after-treatment systems including Diesel Particulate Filters (DPF) as well engines using AdBlue (SCR) technologies.

TOP DOG CK-4 SAE 15W-40 is an excellent mixed fleet oil as meets European ACEA E9 as well as JASO DH-2 performance levels.  Passing all the engine performance parameters of API SN, TOP DOG CK-4 SAE 15W-40 can also be used in petrol powered vehicles making it a versatile mixed fleet engine oil.