ARMY TM 9-2815-257-24 AIR FORCE TO 38G1-128-2 MARINE CORPS TM 10155A/2815-24/3 3-4 3-6.  ENGINE OIL SERVICING. a.    Remove engine oil fill cap (2, Figure 3-1). CAUTION Do not overfill crankcase.  Damage to engine will result. b.    Inspect and clean oil filter (Para. 3-18). c.    Fill engine with required oil until oil level reaches threaded opening of oil fill cap (2) (up to 1.2 quarts (1.1 liters)).  Refer to Table 1-2, Equipment Data, for recommended oils. d.    Install oil fill cap (2).   1. Oil Drain Plug 2. Oil Fill Cap Figure 3-1.  Engine Oil Servicing