Mr. Pietruszewski, 78, of East Brunswick, died Feb. 2 in St. Peter’s University Hospital, New Brunswick. Prior to his retirement in 1986, he was employed for 39 years as an analyst with Ford Motor Co. Inc., Edison. Surviving are his wife, Estelle Federowicz Pietruszewski; two sons, Robert Pietruszewski of East Brunswick and Gary Pietruszewski of Clarkson, Mich.; a sister, Marian Slavic of Hopelawn; a grandson; and several nieces and nephews. A Mass was offered at St. Mary of Ostrabrama Church, South River. Cremation was private. Memorial contributions may be made to St. Mary of Ostrabrama Church, 30 Jackson St., South River, NJ 08882.