Top 10 Best 15w-40

of November 2024
1
Best ChoiceBest Choice
Ultra1Plus SAE 15W-40 Full Synthetic Heavy-Duty Motor Oil, API CK-4/SN - Diesel
ULTRA 1PLUS
ULTRA 1PLUS
10
Exceptional
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2
Best ValueBest Value
Ultra1Plus SAE 15W-40 Conventional Heavy-Duty Motor Oil, API CI-4/SL
ULTRA 1PLUS
ULTRA 1PLUS
9.9
Exceptional
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3
Ultra1Plus SAE 15W-40 Synthetic Blend Heavy-Duty Motor Oil API CK-4/SN - 1 Quart
ULTRA 1PLUS
ULTRA 1PLUS
9.8
Exceptional
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4
Valvoline Premium Blue One Solution SAE 15W-40 Diesel Engine Oil 1 GA
Valvoline
Valvoline
9.7
Exceptional
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5
Shell Rotella T5 Synthetic Blend 15W-40 Diesel Engine Oil (1-Gallon, Case of 3)
Shell Rotella
Shell Rotella
9.6
Exceptional
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6
Mobil Super 96819 15W-40 Delvac 1300 Motor Oil - 1 Gallon (Pack of 4)
Mobil 1
Mobil 1
9.5
Excellent
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7
Shell Rotella T4 Triple Protection Conventional 15W-40 Diesel Engine Oil
Shell Rotella T
Shell Rotella T
9.4
Excellent
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8
TRUEGARD 15W-40 Motor Oil 55-Gallon Drum
TRUEGARD
TRUEGARD
9.3
Excellent
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9
Shell Rotella T6 Full Synthetic 15W-40 Diesel Engine Oil (1-Gallon, Case of 3)
Shell Rotella
Shell Rotella
9.2
Excellent
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10
Triax Fleet Supreme ESP 15W-40 API CK-4 Full Synthetic Diesel Engine Oil,
Triax
Triax
9.1
Excellent
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11
Schaeffer Manufacturing Co. 0700CK4-012 SynShield Durability Advantage 15W-40
Schaeffer Manufacturing Co
Schaeffer Manufacturing Co
9.0
Excellent
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12
Mobil Super 96819 15W-40 Delvac 1300 Motor Oil - 1 Gallon (Pack of 4)
Mobil 1
Mobil 1
8.9
Very Good
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13
Royal Purple 05154 API-Licensed SAE 15W-40 High Performance Synthetic Motor Oil
Royal Purple
Royal Purple
8.8
Very Good
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About 15w-40

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Ultra1Plus SAE 15W-40 Full Synthetic Heavy-Duty Motor Oil, API CK-4/SN - Diesel Engine Oil

SUPERIOR ENGINE PROTECTION U1P SAE 15W-40 Full synthetic formula reduces wear and extends engine life.. ENHANCED PERFORMANCE Strong shear stability maintains oil viscosity for optimal performance under demanding conditions.. COMBATS DEPOSITS OXIDATION Fights soot, sludge, and oil breakdown for cleaner engines and longer oil life.. FUEL EFFICIENCY Minimizes oil consumption for improved fuel economy in various driving conditions.. BROAD COMPATIBILITY Exceeds API CK-4, API CJ-4, CI-4CI-4, CI-4, and CH-4 standards, suitable for a wide range of diesel engines..

Ultra1Plus SAE 15W-40 Conventional Heavy-Duty Motor Oil, API CI-4/SL

Cleans and extends engine life.. Provides fluidity during cold starts.. Reduces engine wear and excessive oil and fuel consumption.. Reduces the accumulation of sludge and the formation of deposits generated at high temperatures.. High resistance to oxidation allows longer cycle between oil change..

Ultra1Plus SAE 15W-40 Synthetic Blend Heavy-Duty Motor Oil API CK-4/SN - 1 Quart

ADVANCED 15W-40 SYNTHETIC BLEND OIL Protects modern older diesel engines API CK-4SN.. EXTENDS ENGINE LIFE Reduces wear controls soot build-up for long engine life.. EXCEPTIONAL PERFORMANCE Excellent oxidation stability viscosity control in extreme conditions.. IMPROVED FUEL ECONOMY Enhanced oil efficiency allows for extended drain intervals.. COLD WEATHER STARTS Formulated for smooth starting and pumpability in very cold temperatures..

Valvoline Premium Blue One Solution SAE 15W-40 Diesel Engine Oil 1 GA

One Solution Technology suitable for a wide range of heavy-duty engines including diesel, gas and natural gas applications. The Only One endorsed and recommended by Cummins. Outstanding oxidation resistance supports long oil life in heavy duty engines. Superior wear protection for hardworking heavy-duty trucks and equipment.

Shell Rotella T5 Synthetic Blend 15W-40 Diesel Engine Oil (1-Gallon, Case of 3)

Synthetic blend 15W-40 diesel engine oil with Triple Protection Plus technology protects against wear, deposits, and oil breakdown. Ideal for on-highway fleets, construction, and agricultural machinery, and diesel pickup trucks including high-power vehicles that require resistance to heat and stress. Improves low-temperature flow compared to conventional 15W-40 oils. Helps control engine deposits for reliability at extended oil drain intervals always follow the OEM recommended oil drain interval. Controls engine wear 37 percent better than the maximum wear requirements in API CK-4 engine wear tests. Improved oxidation performance for increased resistance to oil breakdown under high temperatures compared to the previous formulation. Case of three 1-gallon bottles with ergonomic design for easy handling and pouring.

Mobil Super 96819 15W-40 Delvac 1300 Motor Oil - 1 Gallon (Pack of 4)

For best performance, follow the manufacturer's recommendations in your vehicle owners manual..

Shell Rotella T4 Triple Protection Conventional 15W-40 Diesel Engine Oil (1-Gallon, Case of 3)

Triple Protection from wear, deposits and oil breakdown, this conventional Diesel Engine Oil provides exceptional wear protection for heavy duty engines for longer life. Formulated with advanced additive technology, which is engineered for superior engine cleanliness throughout the oil drain interval. Provides increased shear stability for better viscosity control and optimal engine oil pressure. Package Weight 23.8 pounds.

TRUEGARD 15W-40 Motor Oil 55-Gallon Drum

API CJ-4 APPROVED.

Shell Rotella T6 Full Synthetic 15W-40 Diesel Engine Oil (1-Gallon, Case of 3)

Full synthetic 15W-40 diesel engine oil with Triple Protection Plus technology protects against wear, deposits, oil breakdown, and improves low-temperature flow. Exceptional wear protection for longer life in a wide range of heavy-duty engine applications from pickup trucks to tractors to semi rigs. Enhanced fuel economy capability of 1.5 percent without compromising engine protection or durability compared to 15W-40 oils. Multi-functional dispersant additives provide an enhanced level of protection against the effects of soot, dirt, and other contaminants compared to previous formulation. Increased shear stability for better viscosity control and optimal engine oil pressure. Better cold-cranking properties and low-temperature pumpability for reaching critical engine parts faster. Case of three 1-gallon bottles with ergonomic design for easy handling and pouring. Advanced low ash formulation helps protect the exhaust catalysts and particulate filters found on the latest low-emission vehicles.

Triax Fleet Supreme ESP 15W-40 API CK-4 Full Synthetic Diesel Engine Oil, Friction Optimized and Boosted with Molybdenum and Nano-Boron, Superb Powerstroke Performance (5 Gallon Pail)

CRP organic, metallic, Moly plating technology for unsurpassed wear protection, oxidation, and high temp stability. Friction modified and VI stabilizer pre-boosted un-rivaled turbo-charger protection will not create deposits and ash on turbo bearings will not fry on the turbo. Contains state-of-the-art dispersal and ash control systems to keep your engine extremely clean. Extreme drain intervals capabilities 25,000-mile drain interval for pickups and 80,000 for class 8 semi-trucks. Eliminates the need to clean diesel particulate filters and is for use in virtually all diesel-powered pickups and heavy-duty trucks, both pre 2007 and post 2007 models fitted with emission control systems.

Schaeffer Manufacturing Co. 0700CK4-012 SynShield Durability Advantage 15W-40 Diesel Engine Oil, 12-Quart Bottle (Pack of 12)

Excellent wear protection during severe operating conditions. Oil durability strong oxidation and viscosity control with less oil consumption. Better contamination control with superior soot-busting, deposit-dispersing capability. Strong stay-in-grade performance throughout the life of the oil. Friction modified with micron moly and penetrate.

Mobil Super 96819 15W-40 Delvac 1300 Motor Oil - 1 Gallon (Pack of 4)

Motor Oil - Diesel - 15W40 - 1 gal - Set of 4.

Royal Purple 05154 API-Licensed SAE 15W-40 High Performance Synthetic Motor Oil - 5 gal.

For best performance, follow the manufacturer's recommendations in your vehicle owners manual..
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