The frequency of lubricant replacement in an internal combustion engine is a critical aspect of vehicle maintenance. It dictates the interval at which old or contaminated engine lubricant is removed and replaced with fresh lubricant to ensure optimal engine performance and longevity. This interval is not fixed and can vary significantly based on several factors.
Regular lubricant replacement offers numerous benefits, including reducing friction, dissipating heat, removing contaminants, and protecting against corrosion. Historically, lubricant replacement intervals were much shorter, often requiring changes every 3,000 miles. Advancements in lubricant technology and engine design have extended these intervals significantly, leading to reduced maintenance costs and environmental impact.