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Item #:
52530268
Mobil Delvac Extreme Heavy Duty Full Synthetic Diesel Engine Oil 15W-40, 2.5 Gal
89% of respondents would recommend this to a friend
Item #:
52530268
GBP 66
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Mobil Delvac Extreme 15W-40 is a premium and high-performance, full synthetic diesel engine oil that helps to extend engine life for modern diesel engines operating in extreme conditions
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What Stands Out
Full Synthetic Formula
Mobil Delvac Extreme delivers superior protection and performance with a full synthetic oil blend, ensuring optimal engine cleanliness and longevity in demanding conditions.
High Viscosity Rating
With a 15W-40 viscosity, this engine oil performs exceptionally well in both high and low temperatures, providing reliable lubrication and protection during extreme engine operations.
Extended Oil Life
Designed for heavy-duty applications, this oil promotes extended drain intervals, reducing maintenance costs and downtime for commercial operators while enhancing overall engine reliability.
Product Details
- High-performance synthetic diesel engine oil
- Extends engine life in extreme conditions
- Recommended for heavy-duty applications
- Meets or exceeds API CK-4, CJ-4, CI-4 PLUS, CI-4
- Exceptional oxidation stability and anti-wear performance
- New packaging for ergonomic and efficient pouring
| Motor oil type | Full Synthetic Motor Oils |
| Motor oil viscosity | 5W - 40 |
| Diesel fuel compatible | Y |
| Product line | Mobil Delvac |
| Rec. use | Truck |
| Material | Synthetic |
| Compatible cars | All Types of Modern Vehicles, Including High-Performance, Turbo-Charged, and Supercharged Gasoline and Diesel Multi-Valve Fuel-Injected Engines Found in Passenger Cars, SUVs, Light Vans, and Light Trucks. |
| Vehicle make | Recommended for the latest heavy duty diesel engines operating in extreme conditions, including those equipped with aftertreatment systems and EGR. Recommended for diesel applications using older and naturally aspirated conventional designs. On-highway heavy-duty trucking and off-highway applications including trucking, mining, construction, agriculture and marine. On-highway applications operating in both high speed/high load and short haul pick-up/delivery service. Off-highway applications operating in severe low speed/heavy load conditions using up to 500 ppm sulfur fuels. Diesel-powered equipment from American, European and Japanese OEMs. |
| Brand | Mobil Delvac |
| Product net content parent | 320 Fluid Ounces |
| Volume capacity | 2.5 gal |
| Size | 2.5 gal |
| Features | Meets OEM Requirements |
| Manufacturer | ExxonMobil |
| Vehicle type | Light Truck |
| Has high mileage additives | N |
| Item Weight | 9 lbs (4.08 kg) |
Who Should Buy?
-
Heavy-Duty Trucks
Designed for long-haul trucks, providing excellent wear protection and extended oil change intervals.
-
Commercial Equipment
Ideal for construction and agricultural machinery that requires high-performance lubrication under extreme conditions.
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Fleet Operations
Perfect for fleet managers seeking reliability and efficiency in diesel engines across various vehicles.
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Light-Duty Vehicles
Not suitable for standard gasoline engines; best for heavy-duty diesel applications only.
Product Description
Mobil Delvac Extreme Heavy Duty Full Synthetic Diesel Engine Oil 15W-40, 2.5 Gal
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Customer Questions & Answers
-
Question:
What is the recommended oil drain interval for Mobil Delvac Extreme 15W-40?
Answer: It can provide extended performance for up to two times beyond OEM recommended oil drain intervals. -
Question:
What are the operating environments where this oil can be used?
Answer: Mobil Delvac Extreme 15W-40 is recommended for a wide range of heavy-duty applications and operating environments, both on- and off-highway, including engines operating under heavy loads. -
Question:
Does this oil meet industry standards?
Answer: Yes, it meets or exceeds the requirements of API CK-4, CJ-4, CI-4 PLUS, CI-4, and other service categories.
Mobil Delvac 5W-40 Oil Editorial Review
Mobil Delvac Extreme Heavy Duty Full Synthetic Diesel Engine Oil 15W-40, 2.5 Gal is designed specifically for modern diesel engines, providing exceptional protection under extreme operating conditions. This full synthetic motor oil is compatible with various vehicle types, including high-performance and turbocharged engines, making it versatile for passenger cars, SUVs, light vans, and light trucks. Users have praised its ability to protect engines, particularly in demanding applications like trucking and construction, often highlighting its performance in both high speed and heavy load scenarios. Additionally, it meets OEM requirements, ensuring reliability across a range of diesel applications.
Customer Reviews & Ratings
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Pros
- Suitable for modern and high-performance diesel engines
- Provides exceptional engine protection in extreme conditions
- Compatible with a variety of vehicle types
- Meets essential OEM requirements for diesel engines
- Ideal for both on-highway and off-highway applications
Cons
- Might not be suitable for older gasoline engines
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Jasmin
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“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
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10 September 2026 · via Trustpilot
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“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
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Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
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GBP 66
Order now and get it around Thursday, October 08
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Features & Benefits
- High-performance synthetic diesel engine oil
- Extends engine life
- Recommended for heavy-duty applications
- Provides exceptional high temperature performance
- Delivers excellent low-temperature performance
- Meets or exceeds API CK-4, CJ-4, CI-4 PLUS, CI-4 standards
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