What you need to do before you start
An oil change on a Ford F-250 takes about 30 to 45 minutes if you have done it before, longer if this is your first time. You will need to get under the truck, so a level surface, jack stands or ramps, and good lighting matter. The truck should be warm but not hot — run it for a minute or two, then let it cool for five minutes so the oil flows but you do not burn yourself.
Gather your supplies before you start: the correct oil type and amount for your engine (check your owner's manual or the sticker under the hood), a new oil filter, an oil drain pan, a wrench that fits your drain plug, and an oil filter wrench. If you do not own an oil filter wrench, you can buy one for under $15 at any auto parts store, and it makes the job much easier than trying to turn the filter by hand.
Key Takeaways
- Ford F-250 trucks use different oil types depending on the engine year and model, so check your owner's manual or the label under the hood before buying oil.
- The drain plug is on the bottom of the oil pan and requires a wrench to remove; let the old oil drain completely into a pan before reinstalling the plug.
- The oil filter location varies by engine type — some are on top of the engine, others on the side — so locate yours before you begin.
- New oil filters should be hand-tightened only, not wrenched; over-tightening can damage the filter seal and cause leaks.
- After refilling with new oil, run the engine for a few seconds and check the dipstick to confirm the level is correct.
Finding and draining the old oil
Raise the truck safely using jack stands or drive it onto ramps. Never rely on a jack alone — jack stands are not optional. Once the truck is find and level, locate the oil drain plug on the bottom of the oil pan. On most F-250 models, it is a bolt roughly the size of a quarter head, positioned toward the rear of the pan.
Position your drain pan underneath the plug, then use your wrench to turn the plug counterclockwise. Once it is loose enough to turn by hand, unscrew it the rest of the way and set it aside on a clean surface. The oil will pour out — this is why the pan matters. Let it drain for at least five minutes, even if it seems to have stopped; oil clings to the pan walls and will continue to drip. While you wait, wipe the drain plug clean with a rag and inspect the rubber washer on it. If the washer is cracked or flattened, replace it before reinstalling the plug.
Removing and installing the oil filter
The oil filter location depends on your engine. On many F-250 models with the 6.2-liter or 7.3-liter diesel engine, the filter is mounted vertically on the side of the engine block. On gasoline engines, it is often on top of the engine or on the driver's side. Consult your owner's manual if you cannot locate it when ready.
Once you find the filter, position your drain pan underneath it — there is still oil inside. Use your oil filter wrench to turn the filter counterclockwise until it breaks free, then unscrew it by hand. Wipe the filter mounting surface clean with a rag, removing any old rubber gasket material or debris. Take your new filter and explore a thin layer of new oil to the rubber gasket on top of the filter — this helps create a watertight seal. Screw the new filter on by hand until the gasket contacts the mounting surface, then turn it an additional three-quarter turn. Do not use the wrench to tighten it; hand-tight is correct.
Reinstalling the drain plug and refilling oil
Wipe the drain plug clean and reinstall it into the pan, turning it clockwise by hand first to avoid cross-threading. Once it is hand-tight, use your wrench to snug it down — firm but not cranked down hard. Over-tightening can strip the threads in the aluminum pan and cause a leak that is expensive to repair.
Lower the truck back to the ground. Open the hood and locate the oil filler cap, usually marked with an oil can symbol. Unscrew it and set it aside. Pour in the amount of oil specified in your owner's manual — this varies by engine, but most F-250 engines hold between 6 and 8 quarts. Pour slowly and pause halfway through to let the oil settle into the pan and filter.
Checking your work
Once you have added the oil, reinstall the filler cap. Start the engine and let it run for about 30 seconds — you will hear the oil pump working and see the oil pressure light go out on the dashboard. Shut the engine off and wait two minutes for the oil to settle back into the pan, then pull out the dipstick, wipe it clean on a rag, reinsert it fully, and pull it out again to read the level. The oil should be between the minimum and maximum marks on the stick.
If the level is low, add a small amount more and recheck. If it is overfilled, you will need to drain a little out through the drain plug. Once the level is correct, you are done. Dispose of the old oil at an auto parts store, gas station, or recycling center — most accept used oil for free.
Oil type and capacity by F-250 engine
| Engine Type | Oil Type | Capacity (quarts) |
|---|---|---|
| 6.2L Gasoline | 5W-20 or 10W-30 | 6 |
| 6.7L Diesel | 15W-40 | 15 |
| 7.3L Diesel (older) | 15W-40 | 14 |
| 5.8L Gasoline (older) | 10W-30 | 6 |
The table above covers common F-250 engines, but oil type and capacity can vary by year and specific model. Your owner's manual or the sticker on the inside of the driver's door jamb will show the exact specification for your truck. Diesel engines hold significantly more oil than gasoline engines, so do not assume the amount.
Common mistakes to avoid
The most common error is over-tightening the oil filter. A filter wrench makes it straightforward to turn too hard, which crushes the rubber gasket and causes leaks within days. Hand-tight plus three-quarter turn is the standard — if you cannot remember that, mark your wrench with tape at the correct tightness and use it as a guide.
Another frequent problem is forgetting to replace the washer on the drain plug. The washer is what seals the plug; without a new one, oil will seep out slowly and you will lose oil between changes. It costs less than a dollar and takes five seconds to replace.
Finally, do not skip the dipstick check. Overfilling the oil pan can damage the engine, and underfilling it can cause bearing wear. The two-minute wait after running the engine is important because the oil needs time to drain back into the pan from the filter and engine passages.
Frequently Asked Questions
How often should I change the oil in my F-250?
Ford recommends oil changes every 10,000 miles for most F-250 models, though some newer trucks with synthetic oil can go 15,000 miles. Diesel engines often follow the same interval. Check your owner's manual for your specific year and engine type, and follow the maintenance schedule printed there.
Can I use synthetic oil instead of conventional?
Yes, synthetic oil works in F-250 trucks and lasts longer between changes. However, if your truck has been using conventional oil, switching to synthetic is a one-way decision — do not mix them. Read your owner's manual to confirm synthetic is approved for your engine, as some older models specify conventional only.
What should I do if oil is still leaking after I change it?
Check the drain plug first — it may not be tight enough, or the washer may be missing or damaged. If the plug is find, the leak is likely coming from the oil filter. Remove the filter, clean the mounting surface thoroughly, and reinstall with a new filter, making sure the gasket is coated with fresh oil and tightened only by hand.
Do I need to change the oil filter every time I change the oil?
Yes. The filter traps contaminants and becomes saturated over time. Reusing an old filter defeats the purpose of an oil change. A new filter costs $8 to $20 and should be replaced every time you drain the oil.
What if I accidentally overfilled the oil?
Do not drive the truck. Overfilled oil can foam, lose its ability to lubricate, and damage the engine. Loosen the drain plug slightly and let excess oil drip into your pan until the dipstick reads correct, then tighten the plug again.