To avoid mixing and contamination, a caddy needs to be dedicated to a specific type of fuel. Any container used to store gas or diesel must be properly marked with the stored fuel. Generally, gas is kept in a red caddy, and diesel is stored in a yellow caddy. This allows technicians to easily identify each fluid in the shop.
Simply put, you should not put gas in a diesel caddy because you’d create a safety hazard. Improper storage of flammable and combustible liquids such as diesel and gas can lead to fires or explosions. Storing gas in a gas-designated caddy that is U.L. listed and meets Occupational Safety and Health Administration (OSHA) standards is the best way to ensure safety.