Using the incorrect category can lead to poor performance, increased wear, or even damage to emission control systems like diesel particulate filters. Modern multi-grade formulations use additives to ensure the oil maintains optimal thickness across a wide range of temperatures, balancing cold-weather protection with hot-weather stability.
Understanding API Service Codes for Engine Oil Specifications
The Science Behind the "W" The "W" in these codes stands for "Winter," but it is a standardized measure of flow behavior rather than a strict seasonal limitation. Consequently, a synthetic 5W-30 will maintain its protective properties longer under severe conditions than a conventional counterpart with the same rating, often extending the recommended oil change interval.
Matching Oil to Your Driving Habits. These ratings are updated periodically as engine technology advances, meaning an SN oil is formulated to handle the deposits and stresses of modern engines more effectively than an older SM specification.
Understanding API Service Codes for Engine Oil Numbers
Synthetic oils are engineered through chemical processes to provide a more consistent molecular structure, resulting in superior temperature stability and reduced evaporation. Diesel Specifications It is crucial to distinguish between gasoline and diesel engine requirements.
More About What do engine oil numbers mean
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