
Mobilgard™ 1 HSD marine diesel engine oil
Mobilgard™ 1 HSD fully synthetic diesel engine oil helps extend oil drain intervals by up to 10 times.* Backed by more than 30 years of specialist synthetic formulation expertise, it is designed to help:
- Extend engine life
- Protect components
- Reduce waste oil
- Improve operational efficiency
*Based upon field testing in high-speed, 4-stroke marine engines, compared with conventional heavy-duty diesel engine oil; actual results may vary.

Inside the engine
Success story
Discover how Mobilgard™ 1 HSD 5W-40 engine oil provided more than nine years of protection for a Cummins marine main engine.
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