Power Service Diesel Kleen +Cetane Boost
Diesel Fuel Injector Cleaner, Cetane Booster and Fuel-System Lubricity Additive
Power Service Diesel Kleen +Cetane Boost is a diesel fuel additive formulated to clean fuel injectors, increase cetane and provide lubricity for diesel fuel-system components. Its Max HP Formula is designed to restore performance lost to injector deposits while helping engines run smoother and respond more consistently under load.
Diesel Kleen targets both Internal Diesel Injector Deposits (IDIDs) and external deposits such as nozzle coking. It is suitable for modern High Pressure Common Rail systems as well as older diesel injection systems.
It can be used year-round, but it is not a diesel anti-gel or winterizer. When temperatures fall below 30°F, Power Service recommends Diesel Fuel Supplement +Cetane Boost for winter operability.
Key Benefits
- Cleans dirty diesel fuel injectors
- Helps prevent injector sticking
- Removes internal diesel injector deposits and external nozzle deposits
- Suitable for High Pressure Common Rail and older injection systems
- Boosts cetane up to 6 numbers
- Helps support smoother operation and faster cold starts
- Helps restore power and fuel economy lost to injector deposits
- Contains Slickdiesel Lubricator for fuel-pump and injector lubrication
- Helps reduce wear associated with poor-lubricity diesel fuel
- Helps prevent asphaltene formation and agglomeration
- Helps protect against thermal breakdown and sludge formation
- Provides corrosion protection
- Effective in ULSD, biodiesel and biodiesel blends
- Does not contain metal or metal ions
- Endorsed by Cummins for use in diesel engines
Diesel Injector Cleaning
Modern diesel injectors operate with extremely tight clearances and high injection pressures. Deposits can interfere with injector movement and fuel spray patterns, contributing to rough operation, reduced power and lost fuel economy.
Diesel Kleen +Cetane Boost is formulated to address both:
- Internal Diesel Injector Deposits (IDIDs) that can contribute to injector sticking
- External injector deposits and nozzle coking that can interfere with fuel delivery
Its detergent system provides clean-up and keeps-clean performance for High Pressure Common Rail and older diesel fuel systems.
Cetane Boost Up to 6 Numbers
Diesel Kleen +Cetane Boost can increase the cetane number of diesel fuel by up to 6 numbers.
Cetane is a measure of diesel fuel's ignition quality. Higher cetane can reduce ignition delay, helping support:
- Faster starting
- Smoother combustion
- Reduced power lag
- Quieter engine operation
- More consistent engine response
The amount of cetane improvement depends on the starting fuel quality and treatment rate.
For maximum cetane boost and quicker injector clean-up, Power Service provides a higher treatment dosage than its standard maintenance rate.
Slickdiesel Lubricity Protection
Diesel fuel provides lubrication to fuel pumps and injectors. Poor fuel lubricity can increase wear on these closely fitted components.
Diesel Kleen contains Slickdiesel Lubricator, Power Service's proprietary lubricity additive, to help protect fuel pumps and injectors from accelerated wear.
This is particularly relevant for Ultra Low Sulfur Diesel, where fuel-system lubricity remains an important consideration for modern injection equipment.
Asphaltene and Thermal Stability Protection
Diesel fuel can form asphaltene agglomerations and degradation products as it is exposed to heat and oxidation.
Diesel Kleen helps prevent asphaltene formation and thermal breakdown, reducing the potential for sludge that can contribute to plugged fuel filters and injector deposits.
For long-term stored-fuel stabilization, water removal and tank cleaning, use Power Service Clear-Diesel Fuel & Tank Cleaner according to its directions.
When to Use Diesel Kleen +Cetane Boost
Diesel Kleen can be used year-round for injector cleaning, cetane improvement and fuel-system lubrication.
Power Service's current maintenance guidance recommends Diesel Kleen during temperatures above approximately 30°F.
When temperatures fall below 30°F, switch to Power Service Diesel Fuel Supplement +Cetane Boost, which provides winter anti-gel and fuel-filter icing protection in addition to cetane improvement.
Diesel Kleen itself does not provide anti-gel protection.
Power Service Diesel Kleen Treatment Amounts
The package sizes currently offered by PSC use different concentration levels, so follow the treatment rate for the specific container.
| Package Size |
Standard Treatment |
Maximum Cetane / Faster Cleanup |
| 12 oz. |
Up to 40 gallons |
20 gallons |
| 26 oz. |
Up to 100 gallons |
50 gallons |
| 64 oz. |
Up to 250 gallons |
125 gallons |
| 1 gallon |
Up to 1,000 gallons |
500 gallons |
| 2.5 gallons |
Up to 3,750 gallons |
1,875 gallons |
| 55-gallon drum |
Up to 82,500 gallons |
41,250 gallons |
For thorough mixing, add Diesel Kleen +Cetane Boost to the tank before filling with diesel fuel.
Always follow the directions printed on the specific container being used.
Diesel Fuel Compatibility
Power Service Diesel Kleen +Cetane Boost is effective in:
- Conventional diesel fuel
- Ultra Low Sulfur Diesel (ULSD)
- Biodiesel
- Biodiesel blends
It is designed for diesel fuel systems only.
Do not add Diesel Kleen +Cetane Boost to the Diesel Exhaust Fluid (DEF) tank.
Cummins Endorsement
Power Service currently identifies Diesel Kleen +Cetane Boost as endorsed by Cummins for use in diesel engines.
Continue to follow the engine manufacturer's fuel-quality and maintenance requirements.
Frequently Asked Questions
What is Power Service Diesel Kleen +Cetane Boost?
Power Service Diesel Kleen +Cetane Boost is a diesel fuel additive designed to clean injectors, boost cetane and add lubricity to diesel fuel-system components.
Is Diesel Kleen an injector cleaner?
Yes. Diesel Kleen is formulated to remove both Internal Diesel Injector Deposits and external deposits such as nozzle coking. It is suitable for High Pressure Common Rail and older diesel injection systems.
How much does Diesel Kleen boost cetane?
Power Service lists a cetane increase of up to 6 numbers. Actual improvement depends on the starting fuel and treatment rate.
What does a cetane booster do?
A cetane booster improves diesel fuel's ignition quality. Increasing cetane can help reduce ignition delay, contributing to smoother operation, faster starting and less power lag.
How much Diesel Kleen should I use?
For the current PSC package sizes, a 12 oz. bottle treats up to 40 gallons, a 26 oz. bottle treats up to 100 gallons and a 64 oz. bottle treats up to 250 gallons at the standard treatment rate. Larger concentrated packages treat proportionally more fuel.
Can I use more Diesel Kleen for maximum cetane boost?
Yes. Power Service provides a stronger treatment rate for maximum cetane boost and quicker injector cleanup. For example, the 26 oz. bottle can be used in 50 gallons instead of 100 gallons, while the 64 oz. bottle can be used in 125 gallons instead of 250 gallons.
Should Diesel Kleen be added before or after filling the fuel tank?
For thorough mixing, add Diesel Kleen to the fuel tank before filling the tank with diesel fuel.
Does Diesel Kleen improve fuel economy?
Diesel Kleen is designed to restore fuel economy that has been lost because of injector deposits. Current Power Service product information lists restoration of lost power and fuel economy up to 7%. Actual results depend on the engine, fuel condition, injector deposits, duty cycle and other operating factors.
Does Diesel Kleen add lubricity?
Yes. Diesel Kleen contains Slickdiesel Lubricator to help provide lubrication for diesel fuel pumps and injectors.
Is Diesel Kleen safe for High Pressure Common Rail engines?
Yes. Diesel Kleen is specifically formulated to clean injectors and prevent injector sticking in High Pressure Common Rail systems as well as older diesel injection systems.
Can Diesel Kleen be used with ULSD?
Yes. Diesel Kleen is effective in Ultra Low Sulfur Diesel and provides added fuel-system lubricity.
Can Diesel Kleen be used with biodiesel?
Yes. Power Service identifies Diesel Kleen as effective in biodiesel and biodiesel blends.
Is Diesel Kleen an anti-gel?
No. Diesel Kleen does not provide anti-gel protection. When winter temperatures fall below approximately 30°F, Power Service recommends Diesel Fuel Supplement +Cetane Boost for winter operability.
What is the difference between Diesel Kleen and Diesel Fuel Supplement?
Diesel Kleen +Cetane Boost is primarily an injector cleaner, performance improver, cetane booster and lubricity additive. Diesel Fuel Supplement +Cetane Boost is a winterizer and anti-gel designed to help prevent fuel gelling and fuel-filter icing during cold weather.
Can Diesel Kleen be used year-round?
Yes. Diesel Kleen can be used year-round, although Power Service recommends switching to Diesel Fuel Supplement +Cetane Boost when temperatures fall below approximately 30°F and anti-gel protection is needed.
Does Diesel Kleen stabilize stored diesel fuel?
Diesel Kleen helps prevent asphaltene formation and thermal breakdown, but Power Service currently recommends Clear-Diesel Fuel & Tank Cleaner when long-term fuel stabilization, water removal and tank cleaning are required.
Is Power Service Diesel Kleen endorsed by Cummins?
Yes. Current Power Service product information identifies Diesel Kleen +Cetane Boost as endorsed by Cummins for use in diesel engines.
Can Diesel Kleen be added to the DEF tank?
No. Diesel Kleen is a diesel fuel additive. It should never be added to a Diesel Exhaust Fluid tank.