2009 Ford F250 Super Duty Super Cab Diesel Supplement 2nd Printing - Page 46
2009 Ford F250 Super Duty Super Cab Manual
Page 46 highlights
Maintenance and Specifications • An engine block heater must be used at temperatures below -10°F (-23°C). • Use the same engine oil and filter change intervals when using synthetic engine oil. • Heavier SAE 15W-40 and SAE 5W-40 engine oils are recommended for temperature over 50°F (10°C) and must be used for heavy duty driving and trailer towing. A symbol has been developed by the American Petroleum Institute (API) to help you select the proper engine oil. It will be included on the oil container you purchase. The top section of the symbol shows the oil performance by the API designation. This should match the owner guide recommendation. The center section will show the SAE viscosity grade 46 2009 Econoline (eco) Supplement, 2nd Printing USA (fus)