2018 Ford F-350 Super Duty

Vehicle Specs & Maintenance Data

Engine Size
Engine
6.7L V8
Oil Type & Capacity
15W-40 Full Synthetic (13 qts)
Wheel Torque
165
ft-lbs

The 2018 Ford F-350 Super Duty maintenance specs on this page cover the key fluids, torque values, and wear items you need for routine service. Use these numbers as a quick reference when performing oil changes, tire rotations, brake jobs, and other scheduled maintenance on your Ford F-350 Super Duty.

For oil changes, the 2018 Ford F-350 Super Duty takes 15W-40 Full Synthetic motor oil with a capacity of 13 quarts. Brake fluid type is DOT 3, the recommended coolant is Motorcraft Gold (OAT), and transmission fluid is Mercon LV. Always use the manufacturer-recommended fluids to maintain warranty coverage and engine longevity.

When mounting wheels on the Ford F-350 Super Duty, torque the lug nuts to 165 ft-lbs using a calibrated torque wrench. Over- or under-torquing can lead to warped brake rotors or loose wheels. Re-torque after 50 to 100 miles on newly installed wheels.

Owners of the 2018 Ford F-350 Super Duty have reported 5 common issues including "6.7L Power Stroke CP4 Fuel Pump Failure", "Diesel Exhaust Fluid (DEF) System Failures" and "Steering Wander and Death Wobble". Scroll down to the Diagnostics tab for detailed descriptions, solutions, and estimated repair costs.

There are 2 NHTSA safety recalls on file for the 2018 Ford F-350 Super Duty. Check the Recalls tab below for full details.

Specifications on this page are compiled from multiple publicly available sources including manufacturer documentation, NHTSA data, and automotive databases. Always cross-reference with your owner's manual or official factory documentation before purchasing parts or performing any service.

The 2018 Ford F-350 Super Duty uses 15W-40 Full Synthetic motor oil (13 qt capacity), requires lug nuts torqued to 165 ft-lbs, takes DOT 3 brake fluid.

2018 Ford F-350 Super Duty Specifications
Motor Oil15W-40 Full Synthetic
Oil Capacity13 qt
Lug Nut Torque165 ft-lbs
Brake FluidDOT 3
CoolantMotorcraft Gold (OAT)
Transmission FluidMercon LV
Transmission Fluid
Fluid Type
Mercon LV
Shop
Coolant
Fluid Type
Motorcraft Gold (OAT)
Shop
Brake Fluid
Fluid Type
DOT 3
Shop
Washer Fluid
Windshield
Shop

Manufacturer-recommended maintenance schedule for the 2018 Ford F-350 Super Duty. Always verify intervals against your owner's manual.

Service Item
Interval
Engine Oil & Filter
7,500 mi / 12 mo
Motorcraft 5W-30 (6.2L gas) or 15W-40 (6.7L Power Stroke diesel), 15 qt diesel
Tire Rotation
7,500 mi / 6 mo
Rotate every oil change
Cabin Air Filter
20,000 mi / 24 mo
Replace more often in dusty conditions
Engine Air Filter
30,000 mi / 36 mo
Inspect every 15,000 mi; more often in dusty/towing conditions
Brake Fluid
45,000 mi / 36 mo
DOT 4 LV
Transmission Fluid
150,000 mi
TorqShift 6-speed; Motorcraft MERCON LV; recommend 60,000 mi
Transfer Case Fluid
60,000 mi
4WD models; Motorcraft transfer case fluid
Coolant
100,000 mi
Motorcraft Orange; then every 50,000 mi
Spark Plugs
100,000 mi
Gas engine only; Motorcraft platinum
Serpentine Belt
100,000 mi
Inspect at 60,000 mi
Battery
60 mo
Dual battery on diesel; check annually
DTC Code Lookup

Enter a diagnostic trouble code to see causes, symptoms, and fixes for the 2018 Ford F-350 Super Duty.

Common problems reported by 2018 Ford F-350 Super Duty owners, with recommended fixes and estimated repair costs.

1

6.7L Power Stroke CP4 Fuel Pump Failure

The Bosch CP4.2 high-pressure fuel injection pump on the 6.7L Power Stroke diesel can fail catastrophically, sending metal debris throughout the entire fuel system. Contaminated fuel damages the injectors, fuel rails, fuel lines, and fuel tank. The failure often occurs without warning and results in immediate engine shutdown.

Solution

Replace the CP4.2 pump and flush the entire fuel system, including injectors, fuel rails, lines, and tank. The repair is extremely expensive. Many owners install a lift pump or fuel filtration system as preventive measures. Some aftermarket companies offer CP4 disaster prevention kits. Ford has faced class-action litigation over this issue.

Est. Cost: $8,000 - $12,000 for complete fuel system replacement
2

Diesel Exhaust Fluid (DEF) System Failures

The DEF injection system is prone to multiple failures including DEF quality sensor errors, DEF heater faults, SCR catalyst inefficiency codes, and injector clogging. When the DEF system enters a fault state, a 5-mph limp mode countdown begins after a set number of miles, eventually making the truck nearly undrivable.

Solution

Diagnose with a scan tool to identify the specific DEF component failure. Common repairs include replacing the DEF quality sensor, DEF heater element, DEF injector, or the entire DEF tank assembly. Ford issued multiple TSBs addressing DEF system faults. Use only API-certified DEF fluid.

Est. Cost: $300 - $800 for sensors/heater; $1,000 - $2,500 for DEF tank assembly; $500 - $1,200 for injector
3

Steering Wander and Death Wobble

The Super Duty is prone to a violent front-end oscillation known as 'death wobble' that occurs after hitting a bump at highway speeds. The steering wheel shakes violently and uncontrollably, requiring the driver to slow down significantly to stop the oscillation. Worn steering and suspension components are the root cause.

Solution

Ford issued TSB 19-2305 addressing Super Duty front-end shimmy. Replace the steering damper with a Fox or Bilstein heavy-duty unit. Inspect and replace worn ball joints, tie rod ends, track bar, and track bar bracket. A loose track bar bracket bolt is the most common single cause. Have the front end aligned after repairs.

Est. Cost: $100 - $300 for steering damper; $1,000 - $3,000 for complete front-end rebuild
4

Turbocharger Wastegate Actuator Failure

The variable geometry turbocharger on the 6.7L Power Stroke can develop wastegate actuator problems, causing overboosting, underboosting, or turbo surge. Symptoms include loss of power, excessive black smoke, check engine light with boost pressure codes, and a whistling or squealing sound from the turbo area.

Solution

Replace the turbocharger wastegate actuator or the entire turbocharger assembly if the internal vanes are damaged. Clear the DTC codes and perform a turbo relearn procedure. Ford issued TSBs addressing turbo calibration issues. Ensure the exhaust back-pressure sensor is functioning correctly.

Est. Cost: $500 - $1,000 for actuator; $2,000 - $4,000 for turbo replacement
5

Rear Axle Seal Leak (DRW Models)

Dual rear wheel (DRW) F-350 models develop rear axle hub seal leaks that allow gear oil to seep onto the brakes and wheels. The leak is visible as an oily film on the inside of the rear wheels. Contaminated brake pads and rotors lose braking effectiveness and create a fire risk.

Solution

Replace the rear axle hub seals on the affected side. Inspect the rear brake pads and rotors for oil contamination; contaminated pads and rotors must be replaced, as they cannot be cleaned. Check the differential fluid level and top off with 75W-140 synthetic gear oil.

Est. Cost: $300 - $700 per side for seal; $400 - $800 for brake replacement if contaminated

2 NHTSA safety recalls for the 2018 Ford F-350 Super Duty. Check your VIN at NHTSA.gov

1

EQUIPMENT

Campaign: 19V401000 Date: 29/05/2019

VCI Emergency Vehicle Specialists (VCI) is recalling certain 2017-2018 Ford F-550, 2014 E-350 and E-450, 2015 F-250 and F-450, 2016 E-450, 2017 E-350, F-450 and E-450, 2018 F-350, 2010 E-450, 2005-2006 E-450, 2009 E-450 and Chevrolet C4500-based Type I and Type III ambulances equipped with ASA Electronics Voyager monitors used to display the back-up camera image. The monitors may unexpectedly revert back to the factory default settings which may cause the camera image to be reversed.

Consequence

The driver may inadvertently turn the wrong direction to avoid an object behind the vehicle, increasing the risk of a crash.

Remedy

VCI Emergency Vehicle Specialists will work with ASA to notify the owners, and remedy the displays, free of charge. The recall began May 9, 2019. Owners may contact ASA Electronics at 1-800-384-4400.

2

ENGINE

Campaign: 18V894000 Date: 18/12/2018

Ford Motor Company (Ford) is recalling certain 2015-2019 Ford F-150 and 2017-2019 Ford F-250 Super Duty, F-350 Super Duty, F-450 Super Duty, and F-550 Super Duty pick-up trucks equipped with an engine block heater. Water and contaminants may get into the block heater cable's splice connector causing corrosion and damage.

Consequence

When the heater is plugged in, prolonged corrosion could cause a resistive short, increasing the risk of overheated or melted wiring which can increase the risk of a fire.

Remedy

Ford will notify owners, and dealers will disable the block heater cable, free of charge. Once parts are available, Dealers will replace the engine block heater cable, free of charge. The recall began June 3, 2019. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 18S45.

Have the VIN?

Decode your VIN for even more detailed specs including trim-level data.

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F-350 Super Duty — Other Model Years
2021202020192017201620152014201320122011
See Also
2018 Ford F-350 Super Duty Lug Nut TorqueBest Oil for 2018 Ford F-350 Super DutyAll Vehicles Using 15W-40 Full Synthetic OilAll Vehicles Using DOT 3Oil Change Guide: 2018 Ford F-350 Super DutyWiper Replacement: 2018 Ford F-350 Super Duty