Viscosity: The "W" in 15W40 oil stands for "winter," indicating that it is a multi-grade oil suitable for use in a wide temperature range. The first number (15) represents the oil's viscosity at low temperatures, while the second number (40) represents its viscosity at high temperatures.
A 15W40 oil is relatively thick and may be too viscous for the small engine of a 50cc moped. Using a thicker oil than recommended can increase friction and put strain on the engine's components, potentially leading to premature wear and tear.
Engine Performance: The use of 15W40 oil may also affect the moped's engine performance. Thicker oil can impede oil flow and make it harder for the oil pump to circulate it effectively, resulting in reduced lubrication and cooling of the engine. This can lead to overheating and reduced engine efficiency.
Recommended Oil: Most 4 stroke 50cc mopeds require a lightweight oil with a viscosity grade of 10W-30 or 10W-40. These oils are specifically formulated for small engines and provide adequate lubrication and protection without compromising engine performance.
Using the recommended oil ensures optimal engine performance, longevity, and fuel efficiency. If you are unsure about the appropriate oil for your moped, it's best to consult the owner's manual or seek advice from a qualified mechanic.
