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