However, if you don't have the owner's manual, a good starting point for a 1997 Ford Explorer is to check for 5W-30 conventional or synthetic blend motor oil. Again, this is just a *starting point* and could be incorrect depending on your specific engine and operating conditions. Always defer to your owner's manual for the most accurate information.
Using the wrong oil can seriously damage your engine. Checking the owner's manual or the sticker under the hood is crucial.