DPF systems can be found on most modern diesels and they trap and hold any harmful emissions. The stored deposits are eventually burnt off at high temperatures and this is a process called DPF regeneration. This process usually happens at speeds over 50 MPH but if you don’t achieve these speeds regularly, it can lead to the DPF becoming blocked. This is where a DPF cleaner becomes useful because it’s designed to clear the deposits blocking the filter.
After having troubles myself with a blocked DPF in the past, we have since always used DPF cleaners. Over the years, we have tested a number of formulas (such as the photo we took above). Therefore, along with our own experience and plenty of research, we are able to rate and recommend a number of DPF cleaners.
If you are looking for a quick answer, the best DPF cleaner is the Forte DPF Formula, which is suitable for all diesel engines and aids passive regeneration of the DPF. However, if you are able to spray the cleaner directly into the diesel particulate filter, the K2 DPF Spray is the best alternative.
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DPF Cleaner Comparison
|Forte DPF Formula||Full Tank / Every 3,000 Miles||400 ml|
|Millers Cleaner||60 Litres / Every 2,000 Miles||250 ml|
|Wynn’s WY28272||40 Litres / Every Third Tank||325 ml|
|K2 DPF Spray||Spray Directly into Filter||500 ml|
|Redex DPF Cleaner||Full Tank / Every Third Tank||250 ml|
|STP Cleaner||50 Litres / Every 1,800 Miles||200 ml|
It’s important to note that the formulas need to be used in accordance with their instructions for the best results. Some may require regular use every 3,000 miles in order to clear trapped soot that’s clogging up the filter.
If you have been using the cleaner and there is no difference, we advise that you connect your car to an OBD2 scanner to confirm that the filter is actually blocked.
Below is a list of the best DPF cleaners that clear trapped soot and aid the regeneration of the DPF system.
The Best DPF Cleaner
1. Forte DPF Cleaner and Regenerator
By far the most popular DPF cleaner is the Forte formula and for good reason too. It’s compatible with all diesel engines and is designed to aid passive regeneration of the diesel particulate filter.
The brand recommend that you completely fill the fuel tank and then pour the whole formula into the tank afterwards.
Other features of the Forte DPF Cleaner and Regenerator include:
- Compatible with all diesels and biodiesel up to B30
- Actively reduces soot emissions
- Improves the stability of the DPF
- Reputable brand backing
- 400 ml bottle (available in a pack of 5)
Although expensive, the Forte DPF cleaner is a highly rated formula that won’t disappoint. If you have experienced the dreaded warning light or limp mode, this cleaner may solve your issues when used every 3,000 to 5,000 miles.
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2. Millers Oils Diesel Particulate Filter Cleaner
The Millers diesel particulate filter cleaner is another premium option that’s available in a 250 ml bottle. According to the brand, it’s designed to clean the system and restore engine power as well as fuel economy.
In terms of using this cleaner, the whole bottle treats 60 litres of diesel and as a preventative measure, it should be used every 2,000 miles.
Other features of the Millers Diesel Particulate Filter Cleaner include:
- Lowers the temperature of regeneration
- One shot treatment
- Treats 60 litres of fuel
- Available in bulk buy options
- 250 ml bottle (bulk buy options available)
The Millers DPF cleaner is a high quality option that can be used on a regular basis to maintain a cleaner and more efficient DPF. The formula is also backed by the reputable Millers brand, who have a great reputation in the UK.
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3. Wynn’s WY28272 DPF Cleaner
Wynn’s are a highly rated brand in the UK that produce a number of specialist chemical treatments. Their diesel particulate filter cleaner is designed specifically for city driving cycles and provides ultra-fast results.
For the best results, the brand recommend that you add one bottle to a minimum of 40 litres of diesel. They also advise that you add it to every third tank of filling as a preventative measure.
Other features of the Wynn’s WY28272 Cleaner include:
- Reduces soot emissions
- Cleans and regenerates the particulate filter
- Ideal for city drivers
- Treats 40 litres of fuel
- Suitable for diesel and biodiesel up to B30
- Quicker results than many alternatives
- 325 ml bottle
The Wynn’s WY28272 DPF Cleaner is an excellent all-round formula that clears blocked soot filters without requiring dismantling. For those that mostly drive around the city, the brand promises ultra-fast results.
4. K2 DPF Cleaner Additive
The K2 DPF cleaner is a professional formula that comes in a form of a spray and is sprayed directly into the filter. Unlike the alternatives, this solution requires you to know where the filter is located and how to remove the sensor.
After the formula has got to work, it completely evaporates and leaves no trace whatsoever inside of the filter.
Other features of the K2 DPF Cleaner include:
- Aerosol spray
- Sprays directly into the filter
- Removes carbon and ash deposits
- 500 ml bottle with nozzle attachment
- Fast acting formula
Overall, the K2 DPF Cleaner is a professional grade and highly effective formula that won’t disappoint. As long as you know where the DPF filter is and the sensor that you need to remove, this product is a great choice.
5. Redex Diesel Particulate Filter Cleaner
Redex is a highly reputable brand in the UK that are well-known for their fuel injector cleaner additives. However, they do produce many other additives such as this diesel particulate filter cleaner, which simply pours into the fuel tank and is designed to be used on every third full tank.
The advanced formula works by lowering the temperature that the soot burns at, which is a requirement for those that only drive short distances.
Other features of the Redex Diesel Particulate Filter include:
- Cleans and reactivates DPF’s
- Simply pours into the fuel tank
- Use every third tank for the best results
- Restores performance and fuel economy
- 250 ml bottle
The Redex DPF cleaner is an affordable and highly rated formula that’s developed by the reputable Redex brand. The only drawback is that it has to be used on a regular basis for the best results.
6. STP Diesel Particulate Filter Cleaner
The STP DPF cleaner is one of the cheapest formulas on the market that’s actually worth buying. It’s designed to regenerate the filter and prevent soot build up by lowering the temperature required to burn the trapped soot.
The formula treats 50/60 litres of fuel and it’s advised that you use it every 1,800 miles as a preventative measure.
Other features of the STP Diesel Particulate Filter Cleaner include:
- Cleans and restores
- Designed for city driving diesel vehicles
- Treats 50/60 litres of fuel
- Use every 1,800 miles
- Lowers the temperature required to burn soot
- Made in the UK
- 200 ml bottle
If you are on a tight budget and simply want a last ditch attempt at cleaning the DPF, the STP formula is a great option. It’s made in the UK and meets all the latest regulations to ensure it’s safe to use.
How We Rated The DPF Cleaners
As mentioned earlier in the article, we have experienced a blocked DPF filter in the past and it was an expensive repair. However, with the regular use of DPF cleaners, we haven’t had an issue since and highly recommend them to anyone with a modern diesel car that features a diesel particulate filter.
As well as testing a number of cleaners, we also based our recommendations upon a number of factors. These included how easy they are to use, duration between the treatments, additional qualities and value for the money.
DPF cleaners are suitable for most diesels or biodiesel engines and may require regular usage to keep the DPF clean. If you find that they aren’t as effective as you would expect, you should try and go on a “spirited” drive whilst keeping the RPM’s high. You could also drive on the motorway and keep the car in a lower gear whilst travelling at 60 to 70 MPH.
All of our recommendations are suitable for a range of budgets and available in bulk buy options for extra value for the money. To avoid disappointment, we advise that you purchase from a reputable brand for complete peace of mind.