The term PART OF REO can be solved by two crossword solutions: ELI (3 letters) and OLDS (4 letters). ELI stands for the Oldsmobile division of General Motors, which was founded in 1897 and produced cars until 2004. OLDS is an acronym for the Oldsmobile brand of cars, which was also a division of General Motors. Both ELI and OLDS are part of the REO Motor Company, which was founded in 1905 and produced cars until 1975.