{HEAD ~ The railway diesel crankcase lubricant composition} 1, wherein said {TAIL ~ pentamethylenehexaamine} is substituted with a N alkyl alkylene diamine having the formula ##STR13## wherein R is hydrogen or a hydrocarbon group and R3, R4, and R5 each are hydrogen or a hydrocarbon group, and a is an integer between 0 and 7 
wherein
{ HEAD ~ The railway diesel crankcase lubricant composition } 1 , wherein said { TAIL ~ pentamethylenehexaamine } is substituted with a N alkyl alkylene diamine having the formula # # STR13 # # wherein R is hydrogen or a hydrocarbon group and R3 , R4 , and R5 each are hydrogen or a hydrocarbon group , and a is an integer between 0 and 7
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH