PETROFLO HEAVY DUTY DIESEL MOTOR OILS, are mixed fleet engine oils formulated to provide optimum performance in modern, low emission diesel engines operating under a wide variety of service conditions. PETROFLO HEAVY DUTY DIESEL MOTOR OILS, are recommended for use in turbo-charged and naturally aspirated two and four cycle diesel engines. They may also be used in gasoline engines for the "mixed fleet" operator. PETROFLO HEAVY DUTY DIESEL MOTOR OILS, meet or exceed the requirements of: API CF-4,CF-2,CFH,CF,SL,SJ,SH. CATERPILLAR CD-TO-2. DETROIT DEISEL SERIES 2000/4000. NAVISTAR. ALLISON C-4. MIL-L-2104G MIL-A-A-52306 CID.