Mobil Delvac™ synthetic heavy-duty diesel engine oils

Synthetic oils  

Synthetic engine oils provide advanced performance and protection, typically outperforming conventional diesel engine oils. Mobil Delvac™ Extreme and Mobil Delvac™ Extreme FE synthetic oils make it easy to choose the right synthetic oil for your vehicle’s needs.


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  • Mobil Delvac™ Extreme

    Mobil Delvac™ Extreme 10W-30 diesel engine oil

    Features a boosted formulation that meets or exceeds the API CK-4 specification and provides excellent engine protection – even in extreme conditions.

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  • Mobil Delvac™ Extreme FE

    Mobil Delvac™ Extreme FE 10W-30 diesel engine oil

    Provides extended drain capability and meets or exceeds the API FA-4 specification for fuel-efficient engine oils.

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  • Mobil Delvac Distributor Locator on Tablet

    Find a distributor near you

    Use our locator tool to find out where to buy Mobil Delvac™ products in your area.

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  • Coolant Antifreeze Mobil Delvac extended life prediluted

    Bumper-to-bumper product guide

    It’s easy to find the right Mobil Delvac™ product for any fleet application. Explore our bumper-to-bumper product guide now.

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