Everfit treadmills, like most home exercise equipment, require regular maintenance to ensure optimal performance and longevity. The frequency of refueling, specifically for treadmills, is typically recommended to be every 50 to 100 miles of use. This guideline is based on the assumption that the treadmill is used regularly and for moderate to heavy workouts.

The reason for this frequency is rooted in the treadmill's mechanical and electrical components. Over time, the lubricants that keep the moving parts running smoothly can degrade, leading to increased friction and potential wear and tear. Additionally, the motor and other electrical components can accumulate dust and debris, which can affect performance and efficiency. Regular refueling, which includes lubricating the moving parts and cleaning the motor, helps to maintain the treadmill's performance and prevent costly repairs.

According to a study published in the Journal of Sports Engineering, regular maintenance can extend the lifespan of a treadmill by up to 30%. This is because maintenance not only prevents mechanical issues but also ensures that the treadmill operates at peak efficiency, which can lead to better workout outcomes for the user. Furthermore, the American College of Sports Medicine (ACSM) recommends that treadmills be inspected and maintained at least once a year, which aligns with the 50 to 100 miles of use guideline for refueling.

In summary, Everfit treadmills should be refueled every 50 to 100 miles of use to maintain their performance and longevity. Regular maintenance not only ensures a smooth workout experience but also extends the life of the treadmill, saving users both time and money in the long run.