Direct Injection Spark Ignition (DISI) engines are the latest advancement in gasoline engine technology, which can offer greater fuel efficiency and power when compared to conventional Port Fuel Injection (PFI) engines. Increasing fuel efficiency is a key means of reducing CO2, a greenhouse gas emission. In conventional engines, fuel is injected into the intake ports of each cylinder. In DISI engines, fuel injection occurs directly within the combustion chamber itself. This new location makes the tips of the fuel injectors newly susceptible to accumulating the types of deposits that are formed in the combustion chamber and can negatively impact their spray and flow characteristics. Deposits formed in the combustion chamber can increase the octane appetite of an engine and increase emissions of nitrogen oxides. The PEA chemistry of Techron is known to be effective in avoiding and controlling these combustion chamber deposits. Further, Chevron’s own preliminary testing of Techron in DISI engines suggests this advantage of Techron in conventional engines will apply to DISI engines as well. Nitrogen-enhanced Techron is also expected to do an excellent job of controlling deposits within the fuel injectors themselves in both conventional and DISI engines. These deposits can result in driveability problems, increased emissions, and reduced fuel economy. All of this adds up to an amazing fuel that can benefit DISI engines.