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NOT SURE AND SHE LIVES KINDA FAR AWAY. IM GUESSING EITHER OIL FILTER INSTALLED TOO LOOSE OR THE OLD SEAL STAYED AND THE NEW OIL FILTER DIDNT SEAL. OR DRAIN PLUG WAS NOT TIGHTENED OR WAS STRIPPED OR COULD BE JUST CO-INCEDENT AND CRANKSHAFT FRONT SEAL GAVE OUT SOME OF THOSE YEARS HAVE RECALL INFO ON THAT.