LUBRICATION DT/DTI-466C DIESEL ENGINES Use oils meeting API categories CD, SC/CD, SE/CD, or SF/CD,  or  Military  Specifications  MIL-L-2104D  or  MILL- 2104C. IH No. 1 Enqine Oil meets these requirements. OIL VISCOSITY Oil viscosity (thickness) is described by SAE (Society of Automotive Engineers) Viscosity Grade. Colder temperatures require lower viscosity oils to ensure good flow   during   starting,   while   hotter   temperatures   require higher   viscosity   oils   for   satisfactory   lubrication.   Based upon the temperature range you expect before your next oil change, use oil viscosity chart and the notes below to choose the proper viscosity grade. Using  other  viscosity grades,    or    using    viscosity    grades    at    temperatures outside the recommended ranges could result in engine damage. NOTES: 1. SAE 15W-40 IS THE PREFERRED VISCOSITY GRADE FOR 6.9L DIESEL ENGINES FOR ALL OPERATING CONDITIONS WHERE THE TEMPERATURE WILL NOT BE COLDER THAN - 1C (+ 30°F). 2. SOME    INCREASE    IN    OIL    CONSUMPTION MAY BE EX- PECTED WHEN SAE OW-30, 5W- 20,  5W-30,  10W,  10W-30  AND  1  W-40  OILS ARE    USED.    CHECK    OIL    LEVELS    MORE FREOUENTLY. 3. SAE  5W-20  OILS  ARE  NOT  RECOMMENDED FOR CONTINUOUS HIGH SPEED OPERATION. ENERGY CONSERVING OILS Oils  marketed  as  "Energy  Conserving"  are  intended  to improve fuel economy in  passenger  car  engines.  Some of these oils contain friction modifier chemical additives. One  additive,  molybdenum  dithiophosphate,  has  been implicated in copper  corrosion  problems  in  some  heavy duty diesel engines. Therefore, until further information is available,    do    not    use    an    "Energy    Conserving"    oil containing  molybdenum  dithiophosphate  in  any  IH-built engine. In addition, some "Energy Conserving" oils meet only API category SF for spark ignition engines, and do not meet the oil quality requirements for diesel engines. OIL IDENTIFICATION SYMBOL An  oil  container  symbol  system  has  been  developed  to help  you  choose  the  proper  oil.  The  top  portion  of  the symbol  shows  the  oil  quality,  such  as  API  Service  SF/ CD  in  the  example.  The  symbol  may  show  additional categories,  such  as  API  Service  SE,  SF/CC,  CD.  The center   portion   will   probably   show   the   SAE   viscosity grade,  such  as  SAE  30  in  the  example.  If  the  lower portion  shows  "Energy  Conserving,"  be  sure  the  upper and  center  portions  show  correct  API  service  category and  proper  SAE  viscosity  grade  recommended  for  your engine. CRANKCASE OIL SPECIFICATIONS For specific information on most commercial oil brand names, write for the booklet entitled: "LUBRICATING OIL DATA BOOK FOR HEAVY-DUTY AUTOMOTIVE AND INDUSTRIAL ENGINES" Engine Manufacturers Association 111 East Wacker Drive Chicago, Illinois 60601 (312) 644-6610 CTS-4033B-Page 3