BG 245 Premium Diesel Fuel System Cleaner removes and dissolves deposits from the entire diesel injection system, including fuel injectors and combustion chambers. BG 245 is especially effective in removing heavy deposits inside the injectors of high temperature, HPCR fuel delivery systems. Plus, BG 245 contains a fuel lubricity agent and cetane improver for cold starts. Catalytic converter, DPF and oxygen sensor safe. This diesel fuel additive complies with the federal low-sulfur content requirements for use in diesel motor vehicles.