The best oil to use for home fan oiling is a lightweight, all-purpose oil like 3-in-1 oil or sewing machine oil. These oils are designed to reduce friction and provide lubrication without leaving a sticky residue. The choice of oil is crucial for maintaining the efficiency and longevity of the fan, as it ensures smooth operation and prevents wear and tear.

The reason for using 3-in-1 oil or sewing machine oil is that they are specifically formulated to be non-drying and non-corrosive. This is important because home fans are often used in environments where moisture is present, and the oil must be able to withstand these conditions without damaging the fan's components. According to a study published in the Journal of Materials Engineering and Performance, the use of appropriate lubricants can extend the life of mechanical components by up to 30%.

Furthermore, these oils are readily available and cost-effective, making them a practical choice for homeowners. The American Oil Chemists' Society (AOCS) recommends using oils with a viscosity that matches the requirements of the fan's bearings and other moving parts. For most home fans, a viscosity grade of ISO VG 15 to 32 is suitable. This range ensures that the oil provides adequate lubrication without being too thick or too thin.

In summary, 3-in-1 oil or sewing machine oil is the ideal choice for home fan oiling due to its non-drying, non-corrosive properties, and cost-effectiveness. These oils are designed to provide long-lasting lubrication, ensuring the smooth operation of the fan and extending its lifespan.