An image of a dirty and moldy Starbucks cold brew machine has baffled members of the r/starbucks Reddit community this week after an employee said she returned from a two-week break to find it that ...

The spark plugs in a gasoline engine are not universal, one-size-fits-all components. Plugs are made of a variety of materials with different electrode setups and thread configurations, and knowing ...

A "hot" spark plug has a longer insulator that prevents heat transfer into the water jackets. It keeps more heat in the tip of the spark plug, which helps burn off combustion chamber deposits. But if ...