Selection Guidelines and Maintenance Tips Choosing the correct oil involves more than just matching the viscosity on the dipstick. The robust formulation of this oil helps to manage the byproducts of diesel combustion, including soot and acids, extending the life of both the engine and the after-treatment systems like DPFs and DOCs.
How SAE 15W-40 Clean Combustion Support Enhances Engine Efficiency and Longevity
For high-mileage engines, the thicker consistency can help rejuvenate slightly worn components by filling minor tolerances, reducing oil consumption and the visible signs of aging such as minor external leakage. The "40" refers to the oil's viscosity at 100°C, measuring its resistance to shear forces at normal operating temperature, ensuring the film strength remains adequate to protect moving parts.
When transitioning to this grade, ensure the engine is clean, and consider pairing the oil change with a high-quality filter designed to trap the additional contaminants this viscosity can attract. Furthermore, modern low-sulfur formulations ensure that the performance benefits do not come at the expense of increased emissions.
How SAE 15W-40 Clean Combustion Support Enhances Engine Performance and Longevity
Using the wrong viscosity can lead to inadequate lubrication or, conversely, reduced fuel efficiency. Always consult the vehicle’s owner manual to confirm that the manufacturer approves the use of SAE 15w 40 for that specific model year and application.
More About Sae 15w 40 engine oil
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