Men I have to give Duralube a thumbs up also. I lived in No Cal in '94 and drove my 78 mercury Zepher all the way to Washington State and before I did I changed the oil in my Zeph with used oil, that had DuraLube in it, from a eagle talon "USED OIL". I even bottled u[p a couple of quarts to take with me! I drove the crap out of this car and never had a minutes problem... You Go DURALUBE!!!!