Mobil Delvac 1300 Super 15W-40 Diesel Semi-Synthetic Engine Oil (1 qt) is purpose-built for diesel engines that demand reliable protection, cleanliness, and performance in demanding day-to-day service. This semi-synthetic formulation balances the durability of traditional base stocks with enhanced additive technology, delivering a lubricant you can trust for fleet vehicles, construction equipment, and agricultural machinery.
Key benefits that matter in real-world use
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Advanced wear protection for diesel engines – tough enough for high-heat, high-load operation, helping piston pins, bearings, cam lobes, and other critical components endure longer between maintenance cycles.
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Deposit and sludge control – keeps valve trains and turbochargers cleaner, reducing the buildup that can sap performance and fuel efficiency over time.
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Stable performance under extreme temps – the 15W-40 viscosity grade provides dependable lubrication during cold starts in moderate climates and maintains film strength when the engine runs hot in heavy-duty work.
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Oxidation resistance for long life – minimizes oil breakdown under heavy-duty use, helping maintain viscosity and protection across service intervals.
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Versatile for diesel fleets – suitable for a variety of diesel engines that require a semi-synthetic 15W-40, from on-highway trucks to off-road equipment and agricultural machines.
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Convenient 1 qt container – ideal for top-offs, small-service tasks, or replenishing a single engine without buying larger quantities.
Who benefits most
- Fleet operators managing daily route work, construction sites, or agricultural operations that rely on diesel-powered machinery.
- Independent mechanics and maintenance teams looking for a dependable semi-synthetic option that balances protection with ease of use.
- Owners of diesel engines that require a 15W-40 viscosity oil and want added cleanliness and wear protection over traditional conventional oils.
Practical usage tips
- Consult your engine’s owner manual to confirm compatibility with 15W-40 semi-synthetic formulations and the Delvac 1300 Super family.
- When topping off, ensure the engine is at operating temperature and the oil level is within the recommended range on the dipstick before adding.
- Pair with the corresponding OEM-approved filters and follow your service intervals to maximize protection and engine life.
- Store the bottle upright in a cool, dry place to maintain the integrity of the semi-synthetic formulation.
Why choose Mobil Delvac 1300 Super 15W-40
What sets this oil apart is its targeted diesel performance—focused on shielding engines from wear and deposits in demanding conditions while delivering reliable cold-start performance and consistent viscosity. This isn’t a generic oil; it’s a designed-for-diesel solution that helps your equipment stay productive, reduce unplanned downtime, and simplify maintenance with a single, dependable semi-synthetic option.
