However, generally speaking, a 1997 Ford Taurus would likely use a conventional 5W-30 or 10W-30 motor oil if the climate is moderate. If you live in an area with very hot or very cold temperatures, you might want to choose a different viscosity. For extremely cold climates, 0W-30 might be preferable. For extremely hot climates, 10W-40 might be considered, but always check your owner's manual first.
Always use an oil that meets or exceeds the specifications listed in your owner's manual. Ignoring this could damage your engine.
