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Mobil 1 Delvac Extreme Outstanding Excellent Wear Protection Motor Oil 15W-40, 2.5 Gallon ("Pack"2)
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Key item features
- Extreme Protection: Formulated with synthetic basestocks and a boosted additive system, this oil delivers excellent wear protection and exceptional oxidation stability for extended performance.
- Engine Longevity: Provides outstanding TBN retention for prolonged engine life and resistance to oil consumption, oxidation, and high-temperature deposits.
- Versatile Application: Suitable for heavy-duty applications in on- and off-highway environments, including trucking, mining, construction, and agricultural industries.
- Performance Control: Offers excellent soot and viscosity control for greater engine efficiency and low oil consumption for reduced operational costs.
- Cold Start: Features low temperature fluidity for smooth starting in cold weather and resistance to corrosive and abrasive wear for long life of critical wear surfaces.
- OEM Compliance: Meets demanding specifications of key diesel OEMs for mixed diesel fleets and a low ash formulation meeting API CK-4 and CJ-4 requirements for long emissions aftertreatment life.
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Specs
- Motor oil viscosity15W - 40
- Motor oil typeFull Synthetic Motor Oils
- BrandMobil 1
- Rec. useAutomotive
- Volume capacity2.5 gal
- Has high mileage additivesN
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Starting from $144.47
About this item
Product details
Mobil Delvac Extreme is formulated with synthetic basestocks and a boosted additive system tailored to deliver extended performance for up to two times beyond OEM recommended oil drain intervals. The proprietary formulation delivers excellent wear protection, exceptional oxidation stability, and outstanding TBN retention. Mobil Delvac Extreme also provides outstanding resistance to oil consumption, oxidation, corrosive and abrasive wear, and high temperature deposits. Mobil Delvacâ„¢ Extreme 15W-40 is a synthetic, high-performance diesel engine oil that helps extend engine life while providing long drain capability for modern diesel engines operating in extreme conditions. It is recommended for use in a wide range of heavy-duty applications and operating environments found on- and off-highway, including engines operating under heavy loads. Exceptional oxidation stability - Superior performance in extreme conditions and extended ODI service. Excellent soot and viscosity control - Greater engine efficiency, long engine life and long oil life. Excellent oil consumption control - Lower oil costs due to less make-up oil during operation. Outstanding TBN reserves - Corrosion protection and extended drain intervals for both new and old engines using up to 500 ppm sulfur diesel fuel. Low temperature fluidity and pumpability - Formulated for smooth starting in cold weather. Resistance to corrosive and abrasive wear - Long life of critical wear surfaces. Component compatibility - Long gasket and seal life. Meets demanding specifications of key diesel OEMs - One engine oil for mixed diesel fleets. Low ash formulation meeting API CK-4 and CJ-4 requirements - Long emissions aftertreatment life (DPF, DOC and SCR) Mobil Delvac Extreme 15W-40 engine oil delivers updated high-temperature performance under the extreme operating environments found in the trucking, mining, construction and agricultural industries. Accordingly, this oil meets or exceeds the requirements of API CK-4, CJ-4, CI-4 PLUS, CI-4 and CH-4 service categories, as well as key original equipment manufacturer (OEM) requirements.
Mobil 1 Delvac Extreme Outstanding Excellent Wear Protection Motor Oil 15W-40, 2.5 Gallon ("Pack"2)
- Mobil 1 126791 Delvac Extreme Motor Oil 15W-40, 2.5 Gallon, Box/2
- Formulated with synthetic basestocks and a boosted additive system for extended performance
- Delivers excellent wear protection and exceptional oxidation stability
- Outstanding TBN retention for prolonged engine life
- Provides resistance to oil consumption, oxidation, and high-temperature deposits
- Suitable for heavy-duty applications in on- and off-highway environments
- Exceptional oxidation stability for superior performance in extreme conditions
- Excellent soot and viscosity control for greater engine efficiency
- Low oil consumption for reduced operational costs
- Outstanding TBN reserves for corrosion protection and extended drain intervals
- Low temperature fluidity for smooth starting in cold weather
- Resistance to corrosive and abrasive wear for long life of critical wear surfaces
- Compatible with various engine components for long gasket and seal life
- Meets demanding specifications of key diesel OEMs for mixed diesel fleets
- Low ash formulation meeting API CK-4 and CJ-4 requirements for long emissions aftertreatment life
- Delivers high-temperature performance in trucking, mining, construction, and agricultural industries
- Meets or exceeds API CK-4, CJ-4, CI-4 PLUS, CI-4, and CH-4 service categories
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Specifications
Motor oil viscosity
15W - 40
Motor oil type
Full Synthetic Motor Oils
Brand
Mobil 1
Rec. use
Automotive
Warranty
Warranty information
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Showing 1-2 of 2 reviews
Dec 11, 2025
James
5 out of 5 stars review
Verified Purchase
It was simple to order the Diesel Oil for my upcoming service. The vendor did a nice job of boxing the oil so it protected the product during shipping.
Incentivized Review
Helpful?3CF27Z4F83G53096210444
Jan 22, 2026
al
5 out of 5 stars review
Verified Purchase
Used exclusively in our diesel trucks with great success.
Incentivized Review
Helpful?3CF27Z4F83G53096210444
