Appraisal of Extended Oil Drain Intervals through the Use of Engine or Lubricant Formulation Modifications.
SOUTHWEST RESEARCH INST SAN ANTONIO TX ARMY FUELS AND LUBRICANTS RESEARCH LAB
Pagination or Media Count:
Four engine tests were conducted to evaluate potential methods to increase the periods between required engine oil drains for military vehicles. A 300-hour duration dynamometer test of an L-141 spark ignition engine showed that the use of a synthetic based MIL-L-46152 qualified lubricant with special low blowby piston rings resulted in low lubricant degradation rates. This performance, coupled with the wider temperature operation limits of the multiviscosity lubricant, shows promise of allowing greatly extended lubricant drain intervals. The test also showed a previously unobserved loss in blowby control with increasing test hours which may hint at a lubricantmaterial compatibility problem, clouding the otherwise excellent results.
- Lubricants and Hydraulic Fluids
- Surface Transportation and Equipment
- Reciprocating and Rotating Engines