What is a potential danger of using oil that is too low in viscosity?

Using oil that is too low in viscosity presents significant risks, particularly inadequate lubrication and overheating. Viscosity is a measure of a fluid's resistance to flow. Lubricants that lack sufficient viscosity fail to maintain a protective film between moving parts, which is critical for reducing friction and wear.

When the oil film is insufficient, metal components may make unwanted contact, generating heat due to increased friction. This can lead to overheating, which can cause further degradation of the lubricant and possible damage to the machinery itself. Proper viscosity ensures that the lubricant can perform its functions effectively, including providing a protective barrier, carrying away heat, and reducing wear on components.

Choosing a lubricant with a viscosity that is too low compromises these critical functions, ultimately risking equipment failure and increasing maintenance costs.