2012 Ford F350 Super Duty Diesel Supplement 3rd Printing - Page 44
2012 Ford F350 Super Duty Manual
Page 44 highlights
Maintenance and Specifications ENGINE OIL Checking the engine oil level Because it is normal to add some oil between oil changes, check your engine oil level each time you stop for fuel. To check the engine oil level consistently and accurately, the following procedure is recommended: 1. Have engine at normal operating temperature (at least into the NORMAL range on the engine coolant temperature gauge). 2. Park the vehicle on a level surface, then turn off the engine and open the hood. 3. Allow at least 20 minutes after engine shutdown to ensure that the oil contained in the upper parts of the engine has returned to the oil pan. 4. Protecting yourself from engine heat, pull out the dipstick, wipe it clean and reinsert fully. 5. Read oil level on both sides of dipstick and use highest level (reading) for the actual engine oil level. 6. Maintain the oil level within the crosshatch area on the dipstick by adding oil as required. Do not overfill the oil past the maximum line as depicted by the arrow. Engine oil specifications To help achieve acceptable engine performance and durability, it is important that only engine oils of good quality are used in your diesel engine and it is changed at the recommended interval. For normal or severe service, use Motorcraft oil or an equivalent oil conforming to Ford specifications as listed in the Maintenance product specifications and capacities section in this chapter or API service categories CJ-4 or CJ-4/SM. It is important to use these oils because they are compatible with the emission control equipment of your vehicle to meet the more stringent emission standards. The use of correct oil viscosities for diesel engines is important for satisfactory operation. Determine which oil viscosity best suits the temperature range you expect to encounter for the next service interval from the following SAE viscosity grade chart. 44 2012 Diesel (67l) Supplement, 3rd Printing USA (fus)