Diesel oil is essential for maintaining the performance and longevity of diesel engines, and choosing the right one can make a significant difference. In 2025, the market offers a variety of high-quality diesel oils that cater to different engine needs, ensuring optimal lubrication and protection against wear and tear. From synthetic blends to high-mileage options, these oils are formulated to enhance fuel efficiency and reduce emissions, making them ideal for both commercial and personal vehicles. Selecting the best diesel oil can lead to improved engine performance and reliability, making it a crucial investment for diesel engine owners.
Shell Rotella T6 Full Synthetic 15W-40 Motor Oil, 1 Gallon (3 Pack)
- Full synthetic 15W-40 diesel engine oil with Triple Protection Plus technology protects against wear, deposits, and oil breakdown
- Formulated to deliver increased protection against oxidation and enhanced deposit control/cleanliness
- Better cold cranking properties and low-temperature pumpability (compared to conventional and synthetic blend 15W-40 motor oil)
- Improved wear performance versus API CJ-4 technology
- Compatibility with exhaust emissions control systems
$65.01
Shell Rotella T4 Triple Protection 15W-40 Motor Oil, 1 Gallon (3 Pack)
- 15W-40 diesel engine oil with Triple Protection technology protects against wear, deposits, and oil breakdown
- Provides significantly better wear protection than previous generation oils to maximize engine efficiency and prolong engine life
- Formulated with advanced additive technology plus synthetic base oil for enhanced deposit control and superior engine cleanliness throughout the oil drain interval
- Enhanced shear stability for better viscosity control and optimal engine oil pressure
- Outstanding protection for heavy-duty diesel engines, including the latest emission-controlled engines using EGR and containing a diesel particulate filter
$42.98
Shell Rotella T5 Synthetic Blend 15W-40 Motor Oil, 1 Gallon (3 Pack)
- 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
- Triple Protection Plus technology offers better low-temperature flow, which delivers excellent equipment protection, long engine life, and maintains viscosity control under high temperatures
- Delivers good engine cleanliness and protection against piston deposits, ensuring engine and component reliability at extended oil drain intervals
- Advanced low-ash formulation helps control the blocking or poisoning of exhaust after-treatment devices, helping maintain vehicle emission compliance and engine fuel efficiency
$59.18
SALE
−$3.14
Delo 400 XLE Heavy Duty Synblend Diesel Engine Oil 15W-40, 1 Gallon, Pack of 1
- A premium synthetic blend, long drain mixed-fleet engine oil specifically formulated for on- highway applications, including 2017 greenhouse gas (GHG 17) compliant diesel engines
- Isosyn Advanced Technology: The Next Generation of Heavy Duty Engine Oil Chemistry - engineered to deliver longer oil life, better wear protection and longer engine life
- Isoclean: Certified clean - ensure your lubricants meet OEM cleanliness requirements to help you minimize downtime, reduce maintenance costs and extend equipment life
- Provides high performance piston deposit control and turbocharger protection due to its superb oxidation performance. Its high performing detergent and dispersant additives provide excellent diesel engine component protection.
- Exceptional soot dispersancy and wear control - Cylinders, pistons, rings, and valve train components are well protected against wear and corrosion, providing optimum service life and minimal maintenance, contributing to maximum equipment utilization and minimal downtime.
$21.81
Motorcraft - Oil - Engine (XO10W305Q3SD)
- Leading Manufacturer Of High-Quality Products
- International Renown For Our Diverse Range Of Award-Winning Products
- Fully Equipped With State-Of-The-Art Technology
- All Products Have Been Designed With The Professional In Mind
- Constantly Modernizing Our Powerful Devices To Meet The Demands Of The Modern User
$30.25
Schaeffer Manufacturing Co. 0700CK4-006S SynShield Durability Advantage 15W-40 Diesel Engine Oil, 1-Gallon Bottle
- 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
$38.00
SALE
−$11.00
AC Delco DexosD 0w-20 Engine Oil and Oil Filter Change Kit For 3.0L Duramax Diesel LM2
- Exceeds ILSAC GF-5/APIstandards for protection against deposits, wear, and low speed preignition, especiallyturbocharged engines.
- Exceeds ILSAC GF-5/APIstandards for protection against deposits, wear, and low speed preignition, especiallyturbocharged engines.
- Meets ILSAC GF-5 specificationsfulfill current energy-conserving performance standards
- Meets APIService Classification requirementsbe suitable for usemodern engines
$73.99
SALE
−$9.81
Castrol GTX CK-4 15W-40 Conventional Diesel Motor Oil 1 Gallon, Pack of 3
- Provides exceptional protection from piston deposits, oil thickening and valve train wear while minimizing engine sludge formulation
- Engineered to provide exceptional performance in engines operating under severe service conditions including towing and hauling under high temperatures
- Special viscosity improvers, anti-wear, anti-oxidant and detergent additives protect and maintain cleanliness in hot running, heavy diesel and heavy duty gasoline engines
- Applicable for on and off road heavy duty 4-stroke trucks, gasoline and diesel light trucks and passenger cars where API CK-4, CJ-4, CI-4, CH-4, CG-4, CF-4, CF, SN are recommended
$59.99
SALE
−$6.33
Mobil 1 112786 Delvac 1300 Super 15W-40 Diesel Engine Oil - 4 Gallon Pack
- Size: 1 Gallon
- Type: 15w - 40
- For usediesel engines requiring 15w-40 engine oil (referbottle for specifications)
- Extends engine life with its unique additive system
$81.45
SALE
−$12.46
Schaeffer Manufacturing Co. 9000CK4-006S SynShield OTR Plus Full Synthetic Diesel Engine Oil 5W-40, 1-Gallon Bottle
- Maintains Fuel Economy Without Sacrificing Engine Durability.
- Superior Cold Weather Startability And Operating Characteristics.
- Oil Strength: Withstands Higher Heat Range Than Conventional Oils.
- Keep-Clean Performance: Superior Soot Busting, Deposit-Dispersing Capability.
$47.53
Last update on 2025-05-02 / Affiliate links / Images from Amazon Product Advertising API