There are various cleaners on the market that purport to:
- Increase the temperature of regeneration through Fuel Additives
- Decrease the temperature required to convert the soot to ash through a catalyst
- “Soften” the soot so a regeneration will be affective
Flamingo sells and recommends LiquiMoly’s DPF cleaner that is a combination of 2 & 3 above. The
process takes less than one hour. You do not need to remove the DPF. The process involves
spraying into the DPF assembly through a removed sensor port when the assembly is not hot with a
water based fluid. The fluid should be allowed to soak for 20 minutes. This softens up the hard soot
particles allowing them to regenerate to ash on the next regeneration. A follow up spray then follows
the first spray process to protect the coating on the DPF. Next a forced regeneration. We also sell a
fuel additive that can be used to increase the temperature of regeneration.
DPF Air Bursts
If normal maintenance with regeneration or cleaners with regeneration are no longer effective, then
the next step could be removing the DPF from its housing and using a mechanical means to remove
the soot and ash.
- First thing, Pressure test and identify if DPF if damaged/cracked or too plugged for proper
cleaning without a high temp bake (regeneration at 2,200F).
- Various mechanical processes involve high or low pressure air bursts and/or employing
centrifugal forces to move particles out of the DPF.
By far the most effective cleaning method is cooking the DPF at 1,200 to 2,200 F. This is very
effective at converting all the soot to smaller ash. This process usually includes DPF Air Bursts
before or after.
- Again, first thing, Pressure test and identify if the DPF is damaged/cracked
- Cook the DPF. This may take a day to do.
- Pressure test and/or weigh the DPF to assure that the DPF is in compliance to OEM Specs
- If out of compliance a new DPF will need to be purchased.
- The DPF generally can be cooked up to 3 times during its useful life. The DPF has a coating
and over time this coating brakes down and the DPF starts to crumble.
Best Practices for Maintenance
- Drive the vehicle on the highway with speeds over 50 mph for over 45 minutes, regularly.
- Check that the exhaust gaskets are sealing as designed which holds in heat for the DPF.
- Every other maintenance interval, have your mechanic clean the DPF with LiquiMoly
- DPF Cleaners (LM5169 + LM5171) https://www.youtube.com/watch?v=020MdntTw34
- Cost runs less than $30 per truck for the LiquiMoly products.
- Requires Equipment: Wand / pressurized Sprays / and possible wand extension.
- LiquiMoly Disel Purge (LMCF1-DP) Less than $6. Removes deposits on engine injectors and in the combustion chamber for improved performance of engine. Better
Engine performance will keep the emmissions systems running as designed.
- At every maintenance interval, have your mechanic force a regeneration of the DPF.
- If regenerations are happening more and more, and the LiquiMoly DPF cleaner is not cleaning
as it initially did, consider removing the DPF and mechanically cleaning or cooking it.
- Be active in your maintenance of the vehicle. Other problems like poor engine performance
and EGR problems will quickly clog the DPF.