AN IMPROVED MULTIFILAMENT POLYETHYLENE TEREPHTHALATE YARN HAVING A LUBRICATING PROTECTIVE FILM APPLIED THEREON OF FROM ABOUT 0.3 TO ABOUT 0.6 WEIGHT PERCENT BASED ON THE WIGHT OF THE YARN OF A LIQUID COMPOSITION CONSISTING ESSENTIALLY OF ABOUT 10 TO ABOUT 20 WEIGHT PERCENT OF SAID COMPOSITION OF EACH HEXADECYL STEARATE AND REFINED COCONUT OIL, ABOUT 3.0 TO ABOUT 6.0 WEIGHT PERCENT OF SAID COMPOSITION OF ETHOXYLATED TALLOW AMINE, ABOUT 10 TO ABOUT 20 WIGHT PERCENT OF SAID COMPISTION OF ETHOXYLATED LAURYL ALCOHOL, ABOUT 8.0 TO ABOUT 12.0 WEIGHT PERCENT OF SAID COMPOSITION OF SODIUM SALT OF ALKYLARYLSULFONATE, ABOUT 1.0 TO ABOUT 3.0 WEIGHT PERCENT OF DINONYLSODIUM-SULFOSUCCINATE, ABOUT 1.0 TO ABOUT 3.0 WIGHT PERCENT OF SAID COMPOSITION OF 4,4''-THIO-BIS-(3-METHYL-6-TERTBUTYLPHENOL), ABOUT 35 TO 50 WEIGHT PERCENT OF SAID COMPOSITION OF WHITE MINERAL OIL HAVING A BOILING POINT OF BETWEEN 510*F. AND 620*F. WHEREIN AT LEAST ABOUT 0.15 TO ABOUT 0.30 WEIGHT PERCENT IS RETAINED ON SAID YARN, AND THEN TREATING SAID YARN WITH FROM ABOUT 0.7 TO ABOUT 1.2 WEIGHT PERCENT ON SAID YARN OF A LIQUID COMPOSITION SELECTED FROM THE GROPU CONSISTING OF (A) ABOUT 95 TO ABOUT 98 WEIGHT PERCENT OF SAID COMPOSITION OF TRIETHYLENE GLYCOL-DIPELARGONATE AND ABOUT 2 TO ABOUT 5 WEIGHT PERCENT OF SAID COMPOSITION OF 2,2''METHYLENE-BIS-(4METHYL-6-TERT NONYLPHENOL), AND (B) ABOUT 13 TO ABOUT 25 WEIGHT PERCENT OF SAID COMPOSITION SELECTED FROM THE GROUP CONSISTING OF GLYCEROL MONOLEATE AND DECAGLYCEROL TETRAOLEATE WITH ETHOXYLATED TALL OIL FATTY ACIDS, ABOUT 12 TO ABOUT 20 WEIGHT PERCENT OF SAID COMPOSITION SELECTED FROM THE GROUP CONSISTING OF SULFATED GLYCEROL TRIOLEATE AND ETHOXYLATED ALKYLAMINE, AND ABOUT 55 TO ABOUT 75 WEIGHT PERCENT OF SAID COMPOSITION OF HEXADECYL (ISOCETYL) STEARATE.