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15w40 Full Synthetic Oil Comparison - April 2026

6 Best 15w40 Full Synthetic Oil In Canada

1
Best Choice
9.9Exceptional
2
9.8Exceptional
3
9.6Exceptional
4
9.4Excellent
5
Best Value
9.2Excellent
6
9.0Excellent
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Model

Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil, 5 Litre
Model
Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil, 5 Litre
Model
Shell Rotella T4 Triple Protection 15W-40 Diesel Engine Oil, 5 Litre
Model
Shell Rotella T4 Triple Protection 15W-40 Diesel Engine Oil, 5 Litre
Model
Shell Rotella T5 Synthetic Blend 15W-40 Diesel Engine Oil, 5 Litre
Model
Shell Rotella T5 Synthetic Blend 15W-40 Diesel Engine Oil, 5 Litre

Brand

Shell Rotella
Brand
Shell Rotella
Brand
Shell Rotella
Brand
Shell Rotella
Brand
Shell Rotella
Brand
Shell Rotella

Reviews

750 reviews
Reviews
750 reviews
Reviews
62 reviews
Reviews
62 reviews
Reviews
78 reviews
Reviews
78 reviews

Tech Specs

product dimensions

11.43 x 20.83 x 32.16 cm 4.46 kg
product dimensions
11.43 x 20.83 x 32.16 cm 4.46 kg
product dimensions
11.43 x 20.83 x 32.16 cm 4.56 kg
product dimensions
11.43 x 20.83 x 32.16 cm 4.56 kg
product dimensions
11.43 x 20.83 x 32.16 cm 3.89 kg
product dimensions
11.43 x 20.83 x 32.16 cm 3.89 kg

item weight

4.46 kg
item weight
4.46 kg
item weight
4.56 kg
item weight
4.56 kg
item weight
3.89 kg
item weight
3.89 kg

viscosity

5W-40
viscosity
5W-40
viscosity
15W-40
viscosity
15W-40
viscosity
15W-40
viscosity
15W-40

manufacturer part number

550045390
manufacturer part number
550045390
manufacturer part number
550045135
manufacturer part number
550045135
manufacturer part number
550045349
manufacturer part number
550045349

model

T6
model
T6
model
T4
model
T4
model
T5
model
T5

Available On

Available On
Available On
Available On
Available On
Available On

Our Top 3 Picks

Here are the top 3 recommended products with more information to help you find the right product for you
  • 9.9
    1
    Shell Rotella

    Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil, 5 Litre

    Main highlights
    • Resists breakdown by heat to provide continuous protection throughout the service interval, and also provides improved low-temperature flow compared to conventional 15W-40 oils
    • Multi-functional dispersant additives provide an enhanced level of protection against the effects of soot, dirt, and other contaminants
    • Improved wear performance with significantly increased level of protection against harmful engine wear (compared to previous generation API CJ-4 engine oils)
    • Full synthetic 5W-40 diesel engine oil with Triple Protection Plus technology protects against wear, deposits, and oil breakdown
    • Enhanced fuel economy capability of 1.5% without compromising engine protection or durability (compared to 15W-40 oils)
  • 9.8
    2
    Shell Rotella

    Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil, 5 Litre

    Main highlights
    • Resists breakdown by heat to provide continuous protection throughout the service interval, and also provides improved low-temperature flow compared to conventional 15W-40 oils
    • Multi-functional dispersant additives provide an enhanced level of protection against the effects of soot, dirt, and other contaminants
    • Improved wear performance with significantly increased level of protection against harmful engine wear (compared to previous generation API CJ-4 engine oils)
    • Full synthetic 5W-40 diesel engine oil with Triple Protection Plus technology protects against wear, deposits, and oil breakdown
    • Enhanced fuel economy capability of 1.5% without compromising engine protection or durability (compared to 15W-40 oils)
  • 9.6
    3
    Shell Rotella

    Shell Rotella T4 Triple Protection 15W-40 Diesel Engine Oil, 5 Litre

    Main highlights
    • Suitable for use in agricultural, mining, logging, and construction applications, plus diesel pick-up trucks
    • Provides significantly better wear protection than previous generation oils to maximize engine efficiency and prolong engine life
    • Outstanding protection for heavy-duty diesel engines, including the latest emission-controlled engines using EGR and containing a diesel particulate filter
    • Meets or exceeds the following industry requirements: API CK-4, CJ-4, CI-4 Plus, CI-4, CH-4, SN; ACEA E11; JASO DH-2, MA, MA2
    • Meets or exceeds the following OEM specifications: Caterpillar ECF-2, ECF-3; Cummins CES 20086, 81; Detroit Fluids Specification (DFS) 93K222, 93K218; Deutz DOC III-10 LA; MACK EOS-4.5, EO-O Premium Plus; MAN M 3575; DTFR 15C100 (prey. MB 228.31); MTU Category 2.1; Allison TES-439; Volvo VDS-4.5, VDS-4; Ford WSS-M2C171-F1
    • Formulated with advanced additive technology plus synthetic base oil for enhanced deposit control and superior engine cleanliness throughout the oil drain interval
    • For a full list of equipment approvals and recommendations, please consult your local Shell Technical Help Desk and always consult your owner’s manual
    • Enhanced shear stability for better viscosity control and optimal engine oil pressure
    • 15W-40 diesel engine oil with Triple Protection technology protects against wear, deposits, and oil breakdown

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When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.