* 10W-30 is a good all-around choice for most climates. This is likely what Ford recommended originally.
* 5W-30 is a better choice for colder climates. It flows better in cold temperatures, making starting easier.
* 20W-50 might be suitable for very hot climates, but this is less common now due to advancements in oil technology. Using a higher weight oil than recommended can sometimes be detrimental to engine performance.
Always check your owner's manual for the manufacturer's specific recommendation. The manual will list the recommended oil weight and viscosity based on your operating conditions. Ignoring this could lead to engine damage.
