Can you put 20w50 in a 1998 Ford Windstar 3.8?

Yes, you can use 20W-50 oil in a 1998 Ford Windstar with a 3.8L engine, but it's important to consider the manufacturer's recommendations. Typically, a lighter oil like 5W-30 or 10W-30 is preferred for better fuel efficiency and engine performance, especially in cooler temperatures. Using a thicker oil like 20W-50 may lead to reduced fuel economy and potential issues with oil circulation in colder conditions. Always consult the owner's manual for the best oil type for your specific driving conditions.