Maintenance Intervals and Oil Drainage Even with the best 6. Selecting the correct 6.
6.6 Duramax Oil Type for Diesel Engines: Choosing the Right Viscosity and Protection
Choosing an oil with the correct low SAPS (Sulfated Ash, Phosphorus, Sulfur) formulation is essential. These advanced formulations maintain their viscosity breakdown protection longer, extend drain intervals, and offer better protection in stop-and-go traffic and high-load scenarios where conventional oil would break down rapidly.
Diesel engines produce more contamination than gasoline counterparts, so adhering to the severe-service schedule is vital. Most experts recommend changing the oil every 5,000 to 7,500 miles, or annually, whichever comes first.
6.6 Duramax Oil Type for Diesel Engines: Choosing the Right Viscosity and Protection
The wrong viscosity or failure to meet the proper specifications can lead to premature engine failure, reduced fuel economy, and costly repairs down the line. Viscosity Grade Recommendations for Towing and Climate While the factory fill often defaults to 5W-30, the ideal 6.
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