MOTUL ALL IN ONE ULTRA DIESEL is a multi-action curative cleaning additive for diesel injection systems used in all types of diesel engines, indirect or direct injection, naturally aspirated or turbocharged, with or without DPF (diesel particulate filter), with or without SCR (selective catalytic reduction), and that use diesel or biodiesel fuel. MOTUL ALL IN ONE ULTRA DIESEL is a diesel additive compatible with B7 (7% biodiesel) and B10 (10% biodiesel).