These products feature higher levels of anti-wear additives, such as zinc dialkyldithiophosphate (ZDDP), which protects the flat tappet camshafts and lifters common in many older engines. Regular oil changes are even more critical, as contaminants can accelerate wear.
How High Mileage Oil Reduces Engine Noise and Quiets Your Ride
It is particularly beneficial for engines that exhibit minor oil consumption, slight external leaks, or increased valve train noise. However, the decision must always align with the vehicle manufacturer's recommendations found in the owner’s manual.
Viscosity Grade Best For Typical Performance 5W-20 Newer high-mileage vehicles Improved fuel economy. When to Make the Switch There is no universal mileage threshold, but drivers typically consider high mileage oil once their vehicle reaches 75,000 to 100,000 miles.
How High Mileage Oil Reduces Engine Noise and Quiets Your Ride
Viscosity and Application Choosing the correct viscosity is critical, especially for high-mileage engines. High mileage oil contains seal swell agents that interact with the elastomeric materials, restoring a tighter fit and minimizing these issues without causing damage.
More About High mileage oil for cars
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