How to Change the Oil on a Ford F-450 Dieselby Grace MclainUpdated November 07, 2017
Items you will need
Oil filter wrench
New copper washer
Oil for diesel engines
Oil catch pan
Changing the oil on a Ford F-450 is just a little bit different than changing the oil on the other Ford F-series. Proper maintenance on a Ford F-450 diesel is essential to making the engine run better and last longer. The key to servicing the Ford F-450 is knowing where to find the oil filter and knowing how many quarts of oil to add to the engine. You can change the oil and the oil filter on the Ford F-450 yourself with the proper tools.
Place the oil catch pan under the oil pan and remove the drain plug and let the oil flow into the oil catch pan. While the oil is draining into the catch pan, get ready to replace the oil filter.
Take a 36mm socket and ratchet and remove the oil filter housing top. The oil filter housing on the Ford F-450 diesel will be directly in the center of the engine.
Pull the oil filter out. Be sure to hold the oil filter upright so that oil will not spill everywhere.
Put the new oil filter into the oil filter housing and reattach the oil filter housing lid.
Go back underneath the truck and put the oil plug back in the oil pan and tighten the oil plug.
Go back up top to the engine and put the funnel into the oil filler mouth. Then add 7 quarts of oil to the engine. When done, put the oil cap back on.
Crank the truck and let the oil pressure come up to the operating temperature and then shut the truck off. Wait at least five minutes to give the oil time to drain back down into the pan and recheck the oil level on the dipstick and add more oil until the oil reaches the full mark on the dipstick.
Inspect the drain plug gasket before putting the plug back in the oil pan. If the gasket is worn out to bad, the oil plug might leak. Be sure to use the recommended oil for diesel engines such as "Delo 400" and "Shell Oil."
Do not flip the drain plug gasket on the drain plug or it will leak. Do not overtorque the drain plug when tightening or it could strip out in the oil pan. Wear safety glasses when doing an oil change.
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