If your shop deals with gasoline and diesel, you must have the appropriate containers. You cannot store gasoline in a diesel caddy or vice versa. To avoid mixing and contamination, you need to dedicate each caddy to a specific type of fuel. Generally red fuel caddies are designated for gasoline, and yellow fuel caddies are designated for diesel. This allows technicians to easily identify each fluid in the shop and not waste time trying to figure out which is gasoline and which is diesel.
Improper storage of flammable and combustible liquids can lead to serious fires or explosions. You must properly mark the type of stored fuel on any container used to store gasoline or diesel.