Accession Number : ADA019092

Title :   Engine-Fuel-Lubricant Compatibility Tests on MIL-L-2104C Oils Using Engine Model 6V53T and NATO F-54 Diesel Fuel.

Descriptive Note : Interim rept. May-Sep 74,

Corporate Author : SOUTHWEST RESEARCH INST SAN ANTONIO TEX ARMY FUELS AND LUBRICANTS RESEARCH LAB

Personal Author(s) : Lestz,S. J. ; Bowden,J. N.

Report Date : MAY 1975

Pagination or Media Count : 181

Abstract : The final three tests in a series of 13 engine-fuel-lubricant compatibility tests were completed using the Army's high-output two-cycle diesel engine model 6V53T. In the earlier tests in this series, two MIL-L-2104C lubricants (low and mid-ash level) produced acceptable performance and a third lubricant (of high-ash level) was considered borderline acceptable--all during operation with reference No. 2 DF (0.42% wt sulfur). During operation with an off-specification high sulfur/high end-point (1.2% S/744F) fuel intended to meet MIL-F-16884F (Marine Diesel Fuel), and 6V53T engine was judged incompatible in two tests using two different MIL-L-2104C lubricants. In the final three tests (reported herein), this engine was judged to be incompatible with a special blend of NATO F-54 diesel fuel (0.64% sulfur) during operation with the same two MIL-L-2104C lubricants used in the tests with the 1.2% sulfur fuel. The judgment was based on the occurrence of catastrophic piston/ring/exhaust valve failure and relatively high deposit and wear levels. Recommendations for additional research are made.

Descriptors :   *Lubricating oils, *Tanks(Combat vehicles), Diesel fuels, Diesel engines, Tank engines, Test methods, Compatibility, Performance tests

Subject Categories : Lubricants and Hydraulic Fluids
      Combat Vehicles
      Reciprocating and Rotating Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE