Engine displacement
In 1968 Oldsmobile continued to produce five well appointed Ninety-Eight body styles. Standard equipment included: dual master cylinder, four way flasher, energy-absorbing steering column, back-up lights, side marker lights, seat belts, cross-flow radiator, rear armrest ashtrays, power brakes, electric clock, special moldings, shoulder belts, Deluxe steering wheel, power steering, carpeted trunk and Turbo-Hydramatic transmission. Upholstery was cloth, vinyl or leather. Standard tire size was 8.85 x 14 inches. Engine displacement was increased to the Rocket V8 with 365 horsepower. Ninety-Eight production was in Lansing.