Engine-Fuel and Lubricant Compatibility Tests on MIL-L-2104C Oils Using Engine Model 6V53T and High Sulfur Fuel.
Rept. for Jun-Sep 1973
SOUTHWEST RESEARCH INST SAN ANTONIO TX BELVOIR FUELS AND LUBRICANTS RESEARCH FACILITY
Pagination or Media Count:
Earlier work in this program showed that two MIL-L-2104C lubricants were compatible with the two-cycle diesel engine model 6V53T when subjected to a targeted 210-hour laboratory-dynamometer endurance test cycle, operating with a reference No. 2 diesel fuel having a natural sulfur level of 0.42 wt. In that work, the low-ash 0.93 wt. lubricant REO 203 demonstrated high-level engine capability, and the high-ash 1.75 wt. lubricant REO 205 was judged borderline compatible with the 6V53T engine. In the current work, the use of high natural sulfur fuel 1.2 wt. caused increased ringsticking and combustion chamber and ring zone deposits with REO 205 lubricant, and increased cylinder liner wear and intake port plugging with REO 203 lubricant. Based upon this performance, the 1.2 natural sulfur fuel was judged incompatible with the two-cycle diesel engine, model 6V53T. A recommendation for additional engine testing is made.
- Lubricants and Hydraulic Fluids