Where do you put the oil in on a ford transit van 91 reg?

On a 1991 Ford Transit van, you can add oil through the oil filler cap, which is typically located on the engine's valve cover. To access it, open the hood and look for a round cap that may be labeled with an oil can symbol. Unscrew the cap, use a funnel to pour in the oil, and be sure to check the dipstick to ensure the oil level is correct. Always consult the owner's manual for specific oil type and capacity recommendations.