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How much idle for cool Down?
Diesel additives for DPF/EGR longevity
- Thread starter FlyingTexan
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How much idle for cool Down?
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I have a 2022 6.7 Cummins that I took ownership of in February of 2022.
In 16 months I’ve put 38k miles on it. it goes through an automatic regen every 500-600 miles or so. I haven’t monitored it in a while. I do a **** ton of highway driving though.
In 16 months I’ve put 38k miles on it. it goes through an automatic regen every 500-600 miles or so. I haven’t monitored it in a while. I do a **** ton of highway driving though.
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I still idle 3-4 minutes when pushing 80+ off the interstate for turbos sake
Idling is bad for any modern diesel. I work around hundreds of pieces of equipment and trucks with dpf and scr systems and the ones that idle the most, have the most emissions problems.
One other thing is if you do end up having dpf issues where it needs to be replaced, most times the dpf can be “ re-cored “ where they just cut it out and weld in a new one.
It’s significantly cheaper to do this vs replacing it and all the associated exhaust piping.
One other thing is if you do end up having dpf issues where it needs to be replaced, most times the dpf can be “ re-cored “ where they just cut it out and weld in a new one.
It’s significantly cheaper to do this vs replacing it and all the associated exhaust piping.
1. 120-150k miles
2. Additives help indirectly. Good clean injectors will help keep the dpf cleaner but they all will eventually load up with ash which cannot be burned off and has to be removed.
2. Additives help indirectly. Good clean injectors will help keep the dpf cleaner but they all will eventually load up with ash which cannot be burned off and has to be removed.
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I’m still not convinced a few minutes of idling to cool down after being worked is bad
Absolutely, you need to let it it cool for the turbos sake. Doing something different for the sake of the DPF is not wise.
I think excessive idling is what he's talking about. But how to define what's optimal i have no clue.
Cetane improver such as 2EHN (2–Ethylhexyl nitrate) and detergents which keep the injector tips clean.
2EHN is the most common improver used commercially and only a few companies use it in retail store additive packages (ex Liqui Moly). There are cheaper improvers used in other retail additives like PowerService but, IMO, 2EHN is the gold standard.
Note: If your diesel is blended with some amount of biodiesel then a cetane improver will have less of a benefit because it'll already be in the upper 40's/low 50s.
When I had a diesel I bought from the company blow in bulk and used my own jar for dosing. Call them and see what they recommend.
Performance and Winterization Additives for Diesel Fuels
Amalgamated custom blends additives for diesel fuel and bio diesel fuel blends. Customer needs and expectations are evaluated and a unique customized additive formulation package is developed.
www.amalgamatedinc.com
Basically you want to encourage as complete combustion as possible so excess soot isn't being sent to the DPF and through the EGR. How that translates into additional miles driven prior to servicing I have no idea.
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Little to none.
Honestly not needed anymore especially if you aren't pulling a heavy load. Oil is far above what it once was and all turbos are watercooled now so possibility of coking the oil is non-existent.
To give a TL;DR answer.
There is no current technology that will keep your EGR and DPF clean.
Not all fuel additives work on all fuels. Not all fuels are created equally. Not all tanks are maintained to the same standards.
Keeping clean, fresh fuel is essential.
A basic fuel additive can help keep injectors clean, keep the combustion cycle cleaner. Etc.
But there’s no single miracle cure.
Source: I am owner of a company that manufactures fuel additives, have a few EPA licensed fuel additives. A fleet of trucks. A tank cleaning company. Etc.
In the fuel sampling I’ve done in 2023 so far - which is several major source points - cetane isn’t a huge concern. It averages now in the middle 50 points. 54-56.
There’s a lot of nuances to this conversation that is a deep rabbit hole. But that’s the TL;DR.
There is no current technology that will keep your EGR and DPF clean.
Not all fuel additives work on all fuels. Not all fuels are created equally. Not all tanks are maintained to the same standards.
Keeping clean, fresh fuel is essential.
A basic fuel additive can help keep injectors clean, keep the combustion cycle cleaner. Etc.
But there’s no single miracle cure.
Source: I am owner of a company that manufactures fuel additives, have a few EPA licensed fuel additives. A fleet of trucks. A tank cleaning company. Etc.
In the fuel sampling I’ve done in 2023 so far - which is several major source points - cetane isn’t a huge concern. It averages now in the middle 50 points. 54-56.
There’s a lot of nuances to this conversation that is a deep rabbit hole. But that’s the TL;DR.
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In my owners manual The 6.7 Cummins has a chart for time based on conditions. It's like 45 or 60 seconds or less for stop and go traffic, 1-2 minutes under a load in traffic, half load is 2-3 minutes etc.
Its not the best chart. I do a lot of highway driving, sometimes 80+ mph with 15 psi+ boost. I give it minimum 3 minutes (usually 3:30-4 minutes) when coming straight off the highway.
I still wont do a hot shutdown unless it isnt warmed up and I'm rolling into kum and go or caseys
i'm picking up a trailer in KC tommorow, its going to be my first 5 ton pull. I wont be running and gunning with a heavy trailer tho
Its not the best chart. I do a lot of highway driving, sometimes 80+ mph with 15 psi+ boost. I give it minimum 3 minutes (usually 3:30-4 minutes) when coming straight off the highway.
I still wont do a hot shutdown unless it isnt warmed up and I'm rolling into kum and go or caseys
i'm picking up a trailer in KC tommorow, its going to be my first 5 ton pull. I wont be running and gunning with a heavy trailer tho
13-18 6.7 performs an active regen every 24 engine hrs. Miles aren't a factor. Not sure if this changed 19+ when they updated the engine internals/cp4.
I don't know that it helps. But I perform a stationary desoot once per year prior to an oil change. One thing it does is keep a lower % in the filter longer after the fact. I figure it can't hurt anything.
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yeah I could see it being every 24 hours. How do you perform a stationary desoot?
EGR can be blocked off and turned off with software, thats the best way "prolonging" life of the EGR. DPF have a purpose to trap soot so it always get clogged, but i suppose most diesel passenger cars have ability to regenerate DPF filter as you drive along. I bought a iCarsoft scan tool that support stationary soot regeneration, something that worked well on my diesel Alfa Romeo 159. Regeneration is kinda the best way to prolong DPF service life. So if your diesel car support stationary soot regeneration, get a scantool to force start stationary regeneration and maybe perform that once in few months.
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depends on many variables, mine in one of my work trucks lasted 100k until I had issues, but then had it deleted, so it lasted until I had the useless thing deleted.
I am sure that some will say it does, but there is no way to know if adding anything would contribute to life of the useless filter. Anyone who says otherwise is speculating. Many factors contribute to the life of the filter, most of which is running at idle, and not getting it hot. Could there be one, sure, is the cost worth adding an additive? that is up to you. If you were to have 10 trucks, run them 100k, do all the same services to them, and assuming that all the trucks had the same mechanical conditions, adding different additives to each, then remove the filters for examination, that would be a definitive answer to your question.
My advice, use what you want, make sure you get good fuel, change the fuel filters regularly, and get the thing hot, drive it hard sometimes and you will get the max life out of the useless filter which you should have deleted anyway.
VW's and I'm sure other passenger diesels will do a passive regen at certain speed & load conditions more than likely highway travel. They raise the temp in the DPF enough that it does a slow burn of sorts I guess. Active regen is still the preferred method.
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Plop all the nasties out all at once as oppose to sprinkling the nasties over a long period of time......science
Hi
Fwiw, i always use a Diesel additive for use in my Mercedes OM642. In eight years of ownership i have had no issues with EGR or turbo vanes. I have no DPF.
Maybe i would have had no issues had i not used the additive, who knows?
The additive i use is as follows. Maybe someone could explain the ingredients please. Is this just a pretty standard additive recipe that is common to most products of this type?
www.millersoils.co.uk
Thank you.
Fwiw, i always use a Diesel additive for use in my Mercedes OM642. In eight years of ownership i have had no issues with EGR or turbo vanes. I have no DPF.
Maybe i would have had no issues had i not used the additive, who knows?
The additive i use is as follows. Maybe someone could explain the ingredients please. Is this just a pretty standard additive recipe that is common to most products of this type?
Diesel Power ECOMAX - Multi-Shot
A Diesel fuel treatment to increases power, reduces emissions, improve fuel economy, and clean injectors. Add to your fuel tank prior to fill.
www.millersoils.co.uk
Thank you.
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