10 Best Oil For Diesel Trucks of December 2025

• Mobil 1 Turbo Diesel Truck is designed for modern diesel truck engines, delivering long drain capability, exceptional performance, and potential fuel economy benefits*
• Meets or exceeds the demanding specifications of major truck manufacturers - one engine oil can be used for mixed fleet operations
• Recommended for use in all super high-performance diesel applications, including low emission engines
• Helps engines last longer by reducing low-temperature sludge buildup and high-temperature deposits
• Exceptional low-temperature pumpability allows for easy engine start-up and helps to reduce wear

Mobil 1

• Extra-Thick Yoke
• Expanding Link Mechanism for Wider Working Diameter Range
• Adjusting Screw to Loosen and Tighten Swivel
• Thick Cushion Grip
• Range: 100 to 120-Millimeters for Cummins and Detroit Diesel Filters

CTA Tools

• Exceptional resistance to high-temperature varnish and low-temperature sludge deposits to help keep engines clean
• Wide viscosity range provides outstanding protection consistent with an SAE 40 grade oil at high temperatures, combined with the easy cold-start performance of a 5W rated oil
• Outstanding wear protection
• Excellent high- and low-temperature performance; Pours at temperatures as low as -53 degree Fahrenheit and protects at oil temperatures as high as 400 degree Fahrenheit
• Improved protection against sludge and harmful deposits; Excellent fuel economy benefits

Mobil 1

Independently Published

• For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.
• Formulated for enhanced deposit protection to help keep engines cleaner over the oil drain interval
• Exclusive low ash formulation helps protect the exhaust catalysts and particulate filters found on the latest low emission vehicles
• Meets or exceeds API CJ-4 requirements, and is designed to provide extra performance Shell Rotella T4 performs well in both older and new engines
• Enhanced shear stability performance for viscosity control and optimal oil pressure in your engine
• Provides outstanding protection for virtually all heavy duty diesel engines, including the latest emission controlled engines using EGR and containing a Diesel Particulate Filter

Shell Rotella T

• For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.
• Triple Protection Plus technology protects against wear, deposits and oil breakdown plus provides better low temperature flow compared to SAE 15W-40 oils
• Helps control engine deposits for reliability at extended oil drain intervals
• Formulated to control engine wear, 37% better than the maximum wear requirements in API CK-4 engine wear tests
• Heavy duty engine oil formulated with synthetic base oil components
• Delivers improved oxidation performance for increased resistance to breakdown under high temperatures compared to the previous formulation

Shell Rotella T

• For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.
• Advanced low-ash formulation helps control the blocking or poisoning of exhaust after treatment devices, helping maintain vehicle emission compliance and engine fuel efficiency.
• Synthetic base oil components provides the capability to improve cold starting and low temperature performance reduce fuel consumption
• The Advanced formulation delivers good engine cleanliness and protection against piston deposits ensuring engine and component reliability at extended oil drain intervals.
• Rotella T5 meets the requirements of the major US engine manufacturers for low emission applications.

Shell Rotella T

• For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.
• Provides 1. 5% improved fuel economy performance compared to SAE 15W-40 oils
• Triple Protection Plus formula combines fully synthetic base oils with advanced additives for excellent equipment protection and long engine life
• Formulated with additive technology that protects against the effects of soot, dirt and other contaminants
• Engineered with shear stability to resist viscosity loss and maintain optimal engine oil pressure
• Suitable for diesel-powered vehicles from tractor/trailers to classic cars and heavy-duty diesel pickups that allow an SAE 5W-40
• Part Number: 550045347-3PK

Shell Rotella T