This LO has been revised to comply with DA programming to extend intervals and conserve
lubricants. When practicable, lubrication services will be made to coincide with the vehicle "S"
Preventive Maintenance Service. For this purpose, a 10% tolerance (variation) in specified
lubrication point mileage is permissible. Those vehicles not accumulating 1,000 miles
(1,600 kilometers) in a 6 month period will be lubricated at time of Preventive Maintenance
AIR CLEANERS AND BREATHERS (OIL BATH TYPES)
NBC contaminated filters must be handled using adequate
precaution (FM 21-40) and must be disposed of by trained
The oil contained in the reservoir of oil bath type air filters will be
taken to a segregation area and disposed of in accordance with
Every 3,000 miles (4,800 kilometers) or semiannually, whichever occurs first, clean oil reservoir
and refill with OE/HDO. Disassemble and clean all parts. Refill with OE/HDO as above,
whenever crankcase oil is changed. Far desert or extremely dusty operation, disassemble,
clean all parts, and refill once every operating day or more frequently, if required.
Be sure pressure gage indicates oil is circulating.
a. Gasoline. Drain every 6,000 miles (9,600 kilometers) or 6 months, whichever comes first.
Drain only when hat after operation. Refill to full mark on gage. Run engine a few minutes
and recheck oil level. For proper operation with heavy duty oil, engine thermostat must be
functioning properly to maintain engine coolant temperature at 140F (60C) minimum.
b. Multifuel or Diesel, Sample oil every 60 days or 1,000 miles (1,600 kilometers). Army
Reserve units will sample oil every 120 days or 1,000 miles (1,600 kilometers). Oil will be
changed only when directed by oil analysis laboratory.
If oil analysis laboratory is not available, use the hard time of
6,000 miles (9,600 kilometers), 6 months or 600 engine hours,
whichever occurs first.
Do not hold oil samples. Submit oil samples as soon as they have
Seasonal oil changes will be made due to expected
temperatures. See the Chart on page 2.
Drain only when hot after operation. To check engine oil level, wait one minute after stopping
engine to allow oil to drain into crankcase. Safe operating range is between "add" and "full"
marks. Do not overfill.
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