What oil does a 2018 Ford F-350 6.7L Diesel take?
For the 2018 Ford F-350 with the 6.7L 8-cylinder Engine Code [T] O Diesel Turbo, the engine oil capacity is 13 quarts (including filter). The manufacturer recommends 10W-30 for normal usage and 5W-40 for severe operations. If using biodiesel fuel blends (up to B20), a 5W-40 or 15W-40 viscosity is recommended.
AMSOIL product recommendations
Based on the AMSOIL lookup data, here are the recommended products for your Ford Power Stroke diesel engine:
Engine Oil Options
| Product Name | Viscosity | Part Number |
|---|---|---|
| AMSOIL Signature Series Max-Duty Diesel Oil | 5W-40 | DEOQT-EA |
| AMSOIL Signature Series Max-Duty Diesel Oil | 10W-30 | DTTQT-EA |
| AMSOIL Heavy-Duty Synthetic Diesel Oil | 5W-40 | ADOQT-EA |
| AMSOIL Heavy-Duty Synthetic Diesel Oil | 10W-30 | ADNQT-EA |
Oil Filter Options
Other Maintenance Fluids
| Component | Product Name | Part Number |
|---|---|---|
| Coolant | AMSOIL Passenger Car & Light Truck Antifreeze & Coolant | ANTPC1G-EA |
| Coolant | AMSOIL Propylene Glycol Antifreeze and Engine Coolant | ANT1G-EA |
| Air Filter | WIX Air Filter | WA10679-EA |
Engine Oil Specifications & Details
Proper lubrication is critical for the 6.7L Power Stroke engine to manage high torque and heavy loads.
Oil Viscosity Guide
| Temperature Range | Recommended Viscosity |
|---|---|
| All Temperatures | 0W-30, 0W-40 |
| Above -29°C | 5W-40 |
| Above -18°C | 10W-30 |
| Above -7°C | 15W-40 |
Note: The manufacturer recommends 10W-30 for normal usage and 5W-40 for severe operations. If biodiesel fuel blends (B20 max) are used, the use of 5W-40 or 15W-40 oil is recommended.
Oil Change Specifications
| Specification | Value |
|---|---|
| Capacity (with filter) | 13 quarts |
| Oil Drain Plug Torque | 19 ft/lbs |
Always check the oil level after refilling.
Diesel maintenance notes for this vehicle
- Biodiesel Usage: If your vehicle operates on B20 biodiesel blends, consider using 5W-40 or 15W-40 viscosity.
- Severe Service: For heavy towing or high-stress operating conditions, the manufacturer suggests moving from 10W-30 to 5W-40.
- Filter Capacity: Using a high-quality filter like the EAO98-EA can provide greater capacity for small, wear-causing contaminants.
Common diesel oil-related concerns and how AMSOIL products may help
| Concern | Why it matters | AMSOIL Product | How it may help | Limitation |
|---|---|---|---|---|
| Engine Wear | High-pressure diesel environments cause friction. | Signature Series Max-Duty Diesel Oil | Delivers up to 6X more wear protection based on Detroit Diesel DD13 testing. | Requires regular oil changes. |
| Severe Towing/Heat | High loads increase engine operating temperatures. | Signature Series 5W-40 | Maintains proper viscosity and excels in extreme temperatures. | Not a substitute for cooling system maintenance. |
| Contaminants | Soot and debris can damage engine components. | EAO98-EA Oil Filter | Provides 99% filtering efficiency at 20 microns. | Must be replaced according to service intervals. |
Common maintenance concerns for this vehicle
Owners of the Ford F-350 Super Duty often focus on high-stress operating conditions. Key areas include:
- Turbocharger Health: Maintaining proper lubrication is vital for turbocharger longevity.
- Fuel Quality: Diligent attention to fuel quality and filtration is necessary for the 6.7L Power Stroke engine.
- Emissions Systems: Managing Diesel Exhaust Fluid (DEF) and modern emissions components is a standard part of heavy-duty diesel ownership.
Recall, TSB, and manufacturer communication notes
NHTSA research indicates the following recall information for certain 2018 Ford F-350 models:
- Engine Block Heater (Campaign 18V894000): Certain trucks may have corrosion in the block heater cable’s splice connector, which could lead to a resistive short and fire risk. Dealers can replace the cable free of charge.
- Equipment/Monitor (Campaign 19V401000): Some vehicles equipped with ASA Electronics Voyager monitors may experience reversed camera images due to factory default resets.
Note: Always verify your specific vehicle’s open recalls by checking your VIN through official Ford or NHTSA channels.
About this vehicle
The 2018 Ford F-350 is a critical component of the Ford Super Duty series, designed for significantly higher payload and towing capacities than consumer models like the F-150. This specific model features the 6.7L Power Stroke V8 diesel engine, a specialized powerplant engineered to handle high-torque demands required for heavy towing and commercial-grade work.
Classified as a Class 2 or 3 truck depending on its Gross Vehicle Weight Rating (GVWR), the F-350 is frequently utilized in demanding applications such as agricultural work, construction transport, and hauling large trailers. Because these vehicles are often subjected to high-stress environments—including heavy loads and extended idling—diligent maintenance of lubrication, filtration, and cooling systems is essential for long-term reliability.
Owners should be aware that the complexity of modern diesel emissions systems and turbocharging requires staying current with manufacturer-recommended service intervals. While the 6.7L Power Stroke family is known for its durability, it relies heavily on high-quality fluids to manage the thermal and mechanical stresses inherent in heavy-duty duty cycles.
Common questions about this vehicle’s diesel oil and maintenance
How much oil does my 2018 F-350 6.7L take?
The engine requires 13 quarts of oil when performing an oil change with a filter replacement.
What is the best viscosity for towing?
For severe operations like heavy towing, the manufacturer recommends using 5W-40. AMSOIL Signature Series 5W-40 DEOQT-EA is an option designed for these conditions.
Can I use 10W-30 in my diesel F-350?
Yes, the manufacturer recommends 10W-30 for normal usage. AMSOIL offers several options including the Heavy-Duty ADNQT-EA.
What if I use biodiesel?
If using biodiesel fuel blends (up to B20 max), it is recommended to use 5W-40 or 15W-40 oil.
How often should I change my oil filter?
While specific intervals depend on usage, using a high-efficiency filter like the AMSOIL EAO98-EA can help manage contaminants between service intervals.
How do I check for recalls on my Ford truck?
You should contact a Ford dealer or visit the NHTSA website to check your specific VIN for any active recalls, such as those related to engine block heaters.
Disclaimer: This information is derived from provided source data. Always consult your owner’s manual or a certified technician before performing maintenance.