Best DPF Cleaning Without Removing the Filter (2026): 4 Picks Compared
4 ways to clean a DPF without removing the filter: a spray foam and 3 fuel additives, compared by method, size and what each listing states.
On this page
Top picks at a glance
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- 1
Best OverallMotorPower Foam9.5/10View on Amazon - 2
Best AdditiveXADO RED DPF Cleaner9.4/10View on Amazon - 3
Best 2-PackMotorPower Purge9.4/10View on Amazon - 4
Best 250ml PickLiqui Moly Protector9.3/10View on Amazon
A diesel that keeps dropping into regen, or a warning light that will not clear, often points to a filter full of soot, and pulling the filter off the truck is a big job. The best dpf cleaning without removing the filter is the method that matches the buildup and the access the truck allows. This guide compares a spray foam that goes in through a sensor port with fuel additives that work through the fuel system.
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Quick picks
- Best Overall MotorPower Foam: A spray foam that cleans the DPF and catalytic converter through the O2 sensor or temperature sensor port, with no removal needed. Check price on Amazon
- Best Additive XADO RED DPF Cleaner: A 250 ml diesel additive with a cerium and iron catalyst that lowers the soot burn temperature for city driving. Check price on Amazon
- Best 2-Pack MotorPower Purge: A 2-pack of DPF purge additive, 16.9 fl oz each, for keeping a diesel DPF clean from carbon and soot. Check price on Amazon
- Best 250ml Pick Liqui Moly Protector: A 2 x 250ml DPF protector and cleaner regenerator for diesel engines, from Liqui Moly. Check price on Amazon
Picks for the garage
MotorPower Care DPF Foam Cleaner
A 13.52 Fl Oz spray foam that cleans the DPF and catalytic converter through the O2 sensor or temperature sensor port, with no removal needed.
Pros
- Cleans through the O2 sensor or temperature sensor port, with no disassembly
- Works on DPF filters, catalytic converters and EGR valves
- Works on diesel, gas and hybrid vehicles, per the listing
- Long-reach nozzle included, per the listing
Cons
- No warranty term in the listing
- No safety features stated in the listing
- Soaks 20 to 25 minutes before the sensor goes back in
- No use count stated for the 13.52 Fl Oz can
XADO RED DPF CLEANER Diesel
A 250 ml diesel additive with a cerium and iron catalyst that lowers the soot burn temperature, for DPF and FAP systems.
Pros
- Cerium and iron catalyst lowers the soot burn temperature
- Works even during city driving, per the listing
- Safe for all diesel engines with DPF or FAP systems
- REVITALIZANT reduces wear on injectors and pumps, per the listing
Cons
- No warranty term in the listing
- No safety features stated in the listing
- No use count or interval stated in the listing
- For diesel engines only, per the listing
MotorPower Care DPF Filter Purge Additive 2-Pack
A 2-pack of DPF purge additive, 16.9 fl oz each, for keeping a diesel DPF clean from carbon and soot.
Pros
- 2-pack, with 16.9 fl oz in each bottle, per the title
- Keeps the DPF clean from carbon and soot, per the listing
- Maintaining a clean DPF improves fuel economy, per the listing
- Pairs with the MotorPower foam cleaner, per the listing
Cons
- Title says 16.9 fl oz each while the spec table says 15.4 Fl Oz for the pack
- No warranty term in the listing
- No safety features stated in the listing
- Bullets give almost no detail beyond keeping the DPF clean
2 x Liqui Moly Diesel Particulate Filter Protector
A 2 x 250ml DPF protector and cleaner regenerator for diesel engines, from Liqui Moly.
Pros
- 2-pack of 250ml bottles, per the title
- Diesel particulate filter protector and cleaner regenerator
- From Liqui Moly, a known maker of diesel additives
- Part number 7180 stated in the listing
Cons
- No bullets in the listing
- No specs beyond part number and model
- No warranty term in the listing
- No safety features stated in the listing
Compared on paper
| Model | Shop Score | Type | Size | Use | Warranty |
|---|---|---|---|---|---|
| MotorPower Foam | 9.5/10 | Spray foam | 13.52 Fl Oz | Sensor port | Not stated |
| XADO RED DPF Cleaner | 9.4/10 | Fuel additive | 250 ml | Fuel tank | Not stated |
| MotorPower Purge | 9.4/10 | Fuel additive | 2-pack, 16.9 fl oz each | Fuel tank | Not stated |
| Liqui Moly Protector | 9.3/10 | Fuel additive | 2 x 250ml | Fuel tank | Not stated |
Specifications are manufacturer rated, as published on each listing and collected 9 November 2026. Where a listing contradicts itself, both figures are shown.
How scoring works
Each cleaner is scored on performance, build, value, safety and warranty, with the weights published on the method page. No listing here states a safety feature or a warranty term, so the safety and warranty scores are zero across the picks.
| Product | Shop Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| MotorPower Foam | 9.5 | 32 | 20 | 20 | 0 | 0 |
| XADO RED DPF Cleaner | 9.4 | 29 | 20 | 20 | 0 | 0 |
| MotorPower Purge | 9.4 | 28 | 19 | 20 | 0 | 0 |
| Liqui Moly Protector | 9.3 | 23 | 18 | 18 | 0 | 0 |
Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score.
What the listings tell you
Only 1 pick here cleans through a sensor port. The MotorPower foam sprays through the O2 sensor or temperature sensor port with a long-reach nozzle, soaks 20 to 25 minutes, and then the sensor goes back in and the truck is driven. The other 3 picks are fuel additives: the MotorPower Purge, the Liqui Moly Protector and the XADO cleaner all work through the fuel system, with no disassembly.
Watch the sizes. The MotorPower Purge title says 16.9 fl oz each, while the spec table says 15.4 Fl Oz for the pack of 2, so the listing contradicts itself on size. The Liqui Moly listing gives almost nothing beyond the title and part number, which is why it scores lowest here. The XADO listing gives the most detail on how its catalyst works, naming cerium and iron.
Buying guide: best dpf cleaning without removing the filter for the garage
This guide sits in the engine and shop equipment range. The points below use only what the listings state.
Spray foam or fuel additive
A spray foam goes straight to the filter through a sensor port, and the MotorPower foam listing says it dissolves heavy soot and carbon buildup inside the DPF or catalytic converter without any disassembly. A fuel additive works through the fuel system over time, and the XADO listing says its catalyst lowers the soot burn temperature so cleaning happens even during city driving.
What the size tells you
The MotorPower foam is a 13.52 Fl Oz spray, and the XADO cleaner is a 250 ml bottle. The MotorPower Purge is a 2-pack, with the title saying 16.9 fl oz each and the spec table saying 15.4 Fl Oz for the pack. The Liqui Moly pick is 2 x 250ml. Size alone does not say how many uses a bottle gives, and none of the listings states a use count except the Purge interval.
How often to use it
The MotorPower foam listing says to use the DPF Purge additive every 3,000 miles as preventive maintenance. The other listings state no interval, so plan on the interval the maker gives for the pick in hand.
What to check before ordering
Check the vehicle type and the access point. The foam listing says it works on diesel, gas and hybrid vehicles, and on DPF filters, catalytic converters and EGR valves, through the O2 sensor or temperature sensor port. The XADO listing says it is safe for all diesel engines with DPF or FAP systems, for light trucks, SUVs and fleet vehicles.
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Garage Fit Check
- The foam can measures 8.5 by 3.0 by 3.0 inches, and the XADO bottle measures 1.5 by 3.5 by 8.0 inches, so each fits a shelf or a parts bin.
- The foam needs access to the O2 sensor or temperature sensor port, so check the port location before the job.
- The foam soaks 20 to 25 minutes before the sensor goes back in, so allow that time in the job.
- The Purge 2-pack measures 10.0 by 5.0 by 3.0 inches, and the additive interval is every 3,000 miles, so keep the other bottle for the next round.
FAQ: garage tools
How to remove a DPF filter for cleaning?
These picks are made for cleaning without removing the filter. The MotorPower foam sprays through the O2 sensor or temperature sensor port with a long-reach nozzle, soaks 20 to 25 minutes, and then the sensor goes back in and the truck is driven. No listing here describes a removal procedure.
Can a DPF be cleaned without removing it?
Per the MotorPower foam listing, yes: the foam dissolves heavy soot and carbon buildup inside the DPF or catalytic converter without any disassembly, through the O2 sensor or temperature sensor port. The fuel additive picks work through the fuel system, also with no disassembly.
How long does DPF foam cleaner take to soak?
The MotorPower foam listing says to spray, soak 20 to 25 minutes, reinstall the sensor, and drive. The other listings state no soak time.
How often should DPF purge additive be used?
The MotorPower foam listing says to add the DPF Purge additive every 3,000 miles as preventive maintenance, after foam cleaning. The other listings state no interval.
Does a DPF additive work on a gas engine?
The listings disagree by product. The MotorPower foam listing says it works on diesel, gas and hybrid vehicles. The XADO listing says it is safe for all diesel engines with DPF or FAP systems. Check the listing for the vehicle type before ordering.
Related: the engine and shop equipment hub, the fuel pump cleaner, and the complete fuel system cleaner. Also see exhaust repair clamp. Also see the engine degreaser for diesel. Also see the diesel injector cleaner machine. Also see the diesel exhaust fluid. Also see the diesel fuel additive. Also see the diesel fuel additive for cold weather. Also see the oil additive for diesel. Also see the diesel heater for trucks. Also see the gasket maker for exhaust. Also see the exhaust pipe cutter for home mechanics.
