Diesel fuel additives for modern diesel.

[CardinalSin]

Yes, Penrite DPF Cleaner works, that's for sure. It's handy to carry a bottle or 2 in the car with you.

Attachment 13420

Apart from Penrite's claims is there any independant evidence that this works?
I can see that a car used for short trips might benefit from a forced regen but the claims 8% improved engine efficiency and fuel economy, also maximising the life of the DPF could do with some actual results to back it up.
Could the platinum and cerium add to the particles and decrease the life of the DPF?
Does VW endorse the use of this additive? If not they might use it as a reason to refuse a warranty claim.

Having said that, I do use Penrite oil and respect the company but they are a commercial operation and these things are best treated with a healthy sceptasism until it's been proven by actual results.

[Transporter]

Apart from Penrite's claims is there any independant evidence that this works?
I can see that a car used for short trips might benefit from a forced regen but the claims 8% improved engine efficiency and fuel economy, also maximising the life of the DPF could do with some actual results to back it up.
Could the platinum and cerium add to the particles and decrease the life of the DPF?
Does VW endorse the use of this additive? If not they might use it as a reason to refuse a warranty claim.

Having said that, I do use Penrite oil and respect the company but they are a commercial operation and these things are best treated with a healthy sceptasism until it's been proven by actual results.

Hey, you can give the Penrite a call and ask them, it's better than speculating.

[CardinalSin]

Hey, you can give the Penrite a call and ask them, it's better than speculating.

That would be like ringing KFC to ask if their food is good for me.

[Ryeman]

That would be like ringing KFC to ask if their food is good for me.

At least there is a potentially legally liable source for info and supply.

[fransnz]

I've just started using Morey' s diesel smoke killer after reading the begin of this thread and its amazing what a difference it makes. My Multivan runs so much smoother and a bit more of a kick.
Thanks guys

[Amalgam]

Hi All,

We are about to set of for a Christmas holiday sojourn, and our Passat will be travelling at 110km/h for 300km one way. With side trips, I expect that we will be travelling 900km round trip at 110km/h.

My question is Will the addition of a DPF cleaner provide any additional benefit to the passive regen that a long high speed run on BP Ultimate provides.

Thanks

[Transporter]

With the DPF Cleaner; it works best at the ratio 1 bottle per 30L of diesel, so approx. 1/2 tank in the passenger cars and 2 bottles per 1/2 tank in the Touareg.

The regenerations precess will be shorter as there will be less particles to burn, since the platinum and cerium will lower the temperature required for the particles to burn of while the DPF is not regenerating.

[spud75]

Hi All,

We are about to set of for a Christmas holiday sojourn, and our Passat will be traveling at 110km/h for 300km one way. With side trips, I expect that we will be traveling 900km round trip at 110km/h.

My question is Will the addition of a DPF cleaner provide any additional benefit to the passive regen that a long high speed run on BP Ultimate provides.

Thanks

The long high speed run is not necessary for a regen. It is exhaust temp. This can be achieved with a slower speed and a higher gear. Running at 110kmh in 6th (or 7th) depending on DSG will have rpm in the low mid teens. You usually need to have turbo spun up and active to get the required temp for a regen. This is usually about 1800-1900 rpm and above. The DSG usually drops back a gear whilst doing a regen so you should see yourself using a higher gear whilst pootling along. This is also why when stopped at a set of lights you will see the rpm at 1000 or so as the engine is trying to get up to and keep up the temp to do the regen. I have done a regen at 60km/h in 3rd gear. The idea behind an additive is that you dont need as higher temp to do the passive regen, so it occurs more often when doing short trips/stop/start when the exhaust cant get up to temp.

I would suggest that the DPF cleaner will not affect the passive regen occurring so much on the long trip (especially with a DSG), but the catalyst (cerium/platinum) will assist with a more complete regen to do a more complete burn off. This should assist with less overall back pressure post regen and longer intervals between forced regens.

As far as CardinalSin's request for independent study on Penrite, call them. But one thing I do know, is that Penrite is the only company I know that has publicly published its approval letter from VW/VAG, that their oils comply with the specific VW/VAG oil types.

[CardinalSin]

As far as CardinalSin's request for independent study on Penrite, call them. But one thing I do know, is that Penrite is the only company I know that has publicly published its approval letter from VW/VAG, that their oils comply with the specific VW/VAG oil types.

That was tongue in cheek spud. I have always respected Penrite and spoken to them several times when i've had gearbox problems.
My point was/is that we shouldn't blindly accept what it says on the label when we pick up a container of additive at Super Cheap.
The results of others that may have used such additives helps as long as they haven't been swayed by the labels but the best testament is to see those positive results over a long time to eliminate any negative impacts they might be causing.

[Diesel_vert]

Hi All,

We are about to set of for a Christmas holiday sojourn, and our Passat will be travelling at 110km/h for 300km one way. With side trips, I expect that we will be travelling 900km round trip at 110km/h.

My question is Will the addition of a DPF cleaner provide any additional benefit to the passive regen that a long high speed run on BP Ultimate provides.

Thanks

Certain metals are known to improve the combustion of diesel fuel. Of these, iron, cerium and platinum in particular are used as fuel borne catalysts (FBC) for the regeneration of DPFs.

Ce-Pt FBCs have the effect of lowering the soot oxidation (regeneration) temperature, which is useful for vehicles that frequently encounter low load conditions (e.g. city driving).

Metallic FBCs are impratical at high dosages due to unacceptable levels of ash loading and exhaust back pressure. They are also not recommended for use in vehicles without a DPF due to concerns about metal oxide particle emissions (which the DPF would otherwise collect and prevent its release).

OEMs are aware of the advantages and disadvantages of active (fuel enrichment or additive/FBC) and passive exhaust aftertreatment systems. Literature on the subject, produced by research institutions and industry, is extensive.

To answer your question, Ce-Pt FBCs may help if the vehicle is experiencing extended problems with DPF regeneration.