New engine technology poses many challenges. Smaller displacement engines producing more horsepower with lower emission output, while achieving better fuel economy, come with their own set of challenges once the vehicle has been put into service. During the initial break-in of an engine, it is not uncommon for the engine to consume some oil. Once the rings seat to the cylinders, oil usage usually diminishes.The problem comes when the engine initially does not consume any oil, but starts consuming oil when the mileage approaches 30,000-40,000 miles. When this occurs, the lube shop often gets blamed. The vehicle manufacturers list
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