NHTSA ID Number: 10228867
Manufacturer Communication Number: SSM 51251
Summary
Some 2011-2022 F-Super Duty vehicles equipped with a 6.7L diesel engine may exhibit a ticking noise at idle after an engine oil change. It is often referred to as Typewriter Noise because of its similarity to the sound of a mechanical typewriter. When engine temperatures reach 150 ðF (65 ðC) or higher, (from engine idle up to approximately 1700 RPM’s), this noise can typically be heard at the front wheel well and is often isolated to the transmission bell housing or oil pan area. Typewriter Noise is not detrimental to engine function or durability and has no short or long term effects on the engine. Do not attempt repairs to eliminate this noise. This noise is characteristic of the 6.7L diesel engine and will typically cease or diminish significantly within the oil change maintenance interval.
48 Affected Products
Vehicles
1 Associated Document
Manufacturer Communications
SSM 51251
2011-2022 F-Super Duty – 6.7L Diesel – Tick Tap And/or Typewriter Noise At Idle
NHTSA ID Number: 10140328
Manufacturer Communication Number: SSM 47028
Summary
Some 2011-2018 F-Super Duty 6.7L diesel equipped vehicles may exhibit a ticking noise at idle after an engine oil change. It is often referred to as Typewriter Noise because of its similarity to the sound of a mechanical typewriter. When engine temperatures reach 150ºF (65ºC) or higher, (from engine idle up to approximately 1700 RPM’s), this noise can typically be heard at the front wheel well and is often isolated to the transmission bell housing or oil pan area. Typewriter Noise is not detrimental to engine function or durability and has no short or long term effects on the engine. Do not attempt repairs to eliminate this noise. This noise is characteristic of the 6.7L diesel engine and will typically cease or diminish significantly within the oil change maintenance interval.
1 Associated Document
Manufacturer Communications
SSM 47028
NHTSA ID Number: 10138529
Manufacturer Communication Number: SSM 47028
Summary
Some 2011-2018 F-Super Duty 6.7L diesel equipped vehicles may exhibit a ticking noise at idle after an engine oil change. It is often referred to as Typewriter Noise because of its similarity to the sound of a mechanical typewriter. When engine temperatures reach 150ºF (65ºC) or higher, (from engine idle up to approximately 1700 RPM’s), this noise can typically be heard at the front wheel well and is often isolated to the transmission bell housing or oil pan area. Typewriter Noise is not detrimental to engine function or durability and has no short or long term effects on the engine. Do not attempt repairs to eliminate this noise. This noise is characteristic of the 6.7L diesel engine and will typically cease or diminish significantly within the oil change maintenance interval.
1 Associated Document
Manufacturer Communications
SSM 47028
NHTSA ID Number: 10095851
Manufacturer Communication Number: SSM 46407
Summary
SOME 2011-2017 F-SUPER DUTY 6.7L DIESEL EQUIPPED VEHICLES MAY EXHIBIT A TICKING NOISE AT IDLE AFTER AN ENGINE OIL CHANGE. IT IS OFTEN REFERRED TO AS TYPEWRITER NOISE BECAUSE OF ITS SIMILARITY TO THE SOUND OF A MECHANICAL TYPEWRITER. WHEN ENGINE TEMPERATURES REACH 150ºF (65ºC) OR HIGHER, (FROM ENGINE IDLE UP TO APPROXIMATELY 1700 RPM’S), THIS NOISE CAN TYPICALLY BE HEARD AT THE FRONT WHEEL WELL AND IS OFTEN ISOLATED TO THE TRANSMISSION BELL HOUSING OR OIL PAN AREA. TYPEWRITER NOISE IS NOT DETRIMENTAL TO ENGINE FUNCTION OR DURABILITY AND HAS NO SHORT OR LONG TERM EFFECTS ON THE ENGINE. DO NOT ATTEMPT REPAIRS TO ELIMINATE THIS NOISE. THIS NOISE IS CHARACTERISTIC OF THE 6.7L DIESEL ENGINE AND WILL TYPICALLY CEASE OR DIMINISH SIGNIFICANTLY WITHIN THE OIL CHANGE MAINTENANCE INTERVAL.
1 Associated Document
Service Bulletin Document
SSM 46407
- EVERYDAY TREATMENT: Keep your diesel engine in top condition with our EDT that is designed to improve performance & maintain engine health. With regular use, you can ensure your engine runs smoothly & efficiently giving you peace of mind on the road.
- BOOST FUEL ECONOMY: Enhance your vehicle performance with our diesel additive that boosts cetane levels by up to 7 points resulting in better fuel economy & reduced maintenance costs. Say goodbye to poor acceleration & frequent trips to the mechanic.
- FUEL INJECTOR CLEANER: Cleans both internal & external injector deposits, enhances the lubricity of fuel to safeguard the fuel system components, such as the pump & injectors to increase engine longevity while also acting as a fuel system cleaner.
- PREVENTS RUST & CORROSION: While demulsifying moisture & adding stability to fuel by preventing oxidation & degradation, it also provides a reliable solution for protecting fuel systems from the damaging effects of rust & corrosion.
- EASY TO USE: Use at every fill-up, 1 oz. or 2oz. (for more cetane and lubricity boost) for every 25 gallons of diesel, this product is easy to use! Just pour it into your diesel fuel tank during your next fill up.
- EVERYDAY TREATMENT: Keep your diesel engine in top condition with our EDT that is designed to improve performance & maintain engine health. With regular use, you can ensure your engine runs smoothly & efficiently giving you peace of mind on the road.
- BOOST FUEL ECONOMY: Enhance your vehicle performance with our diesel additive that boosts cetane levels by up to 7 points resulting in better fuel economy & reduced maintenance costs. Say goodbye to poor acceleration & frequent trips to the mechanic.
- FUEL INJECTOR CLEANER: Cleans both internal & external injector deposits, enhances the lubricity of fuel to safeguard the fuel system components, such as the pump & injectors to increase engine longevity while also acting as a fuel system cleaner.
- PREVENTS RUST & CORROSION: While demulsifying moisture & adding stability to fuel by preventing oxidation & degradation, it also provides a reliable solution for protecting fuel systems from the damaging effects of rust & corrosion.
- EASY TO USE: Use at every fill-up, 1 oz. or 2oz. (for more cetane and lubricity boost) for every 25 gallons of diesel, this product is easy to use! Just pour it into your diesel fuel tank during your next fill up.
- EASY USE AT EVERY FILL-UP: Add directly to the fuel tank at each fill-up. The long neck and measuring chamber make treating fuel simple. One 40 oz bottle treats up to 400 gallons
- FOR ALL DIESEL ENGINES: Suitable for use in all diesel vehicles and equipment - light-duty, heavy-duty, pickup, SUV, van, RV, etc. (including modern HPCR systems)
- IMPROVES LUBRICITY (ASTM D6079): Tested to improve lubricity by 43% to help protect fuel system components, including wear-sensitive parts like the CP4 pump
- BOOSTS CETANE UP TO +8: Raises cetane up to 8 points for faster ignition, smoother combustion, and improved drivability; many engines run best around 48–50 while pump diesel is often 40–45
- CLEANS INJECTORS: AR6500's detergent package removes injector deposits and restores spray patterns for improved atomization, supporting better performance and fuel economy
- Cleans dirty injectors and prevents injector sticking in both High Pressure Common Rail (HPCR) and older systems
- Removes both internal and external deposits on fuel injectors
- Restores lost power and fuel economy
- Contains Slickdiesel Lubricator to protect fuel pumps and injectors from increased wear caused by poor quality Ultra Low Sulfur Diesel (ULSD) fuel
- Effective in all diesel fuels, including ULSD, biodiesel and biodiesel blends
- TWO-STEP FUEL SYSTEM RESET: Includes AR6400-D Diesel Fuel System Cleaner + AR6500 Diesel Treatment (40 oz) for a complete clean-and-maintain solution
- HOW IT WORKS: Use AR6400-D first for a deep clean (12 oz treats 30-40 gallons), then use AR6500 at every fill-up for ongoing protection (40 oz treats up to 400 gallons)
- FOR ALL DIESEL ENGINES: Suitable for all diesel vehicles and equipment, including modern HPCR systems
- CLEANS INJECTORS & RESTORES RESPONSE: Removes injector deposits and restores spray patterns for smoother running, improved response, and more efficient combustion
- IMPROVES LUBRICITY (ASTM D6079): AR6500 is tested to improve lubricity by 43% to protect fuel system components, including wear-sensitive parts like the CP4 pump
Last update on 2026-06-05 / Affiliate links / Images from Amazon Product Advertising API
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