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.

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

10W-30 | 15W-40
Mobil Delvac™ Extreme FE
Provides extended drain capability and meets or exceeds the API FA-4 specification for fuel-efficient engine oils.

10W-30

Distributor locator
Use our locator tool to find out where to buy Mobil Delvac™ products in your area.
Find now about Distributor locator
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.
Explore now

Synthetic oils

Mobil Delvac™ Extreme

Mobil Delvac™ Extreme FE

Distributor locator

Bumper to bumper product guide