Diesel fuel additives for modern diesel.

[Amalgam]

Just fuelled the Passat with BP Ultimate and Penrite DPF Cleaner.

Let's see what happens.

[Ryeman]

Just to clarify;
All diesel is no more than 10ppm sulphur?
The difference is in the additive (if any) for each brand?

[Diesel_vert]

Just to clarify;
All diesel is no more than 10ppm sulphur?
The difference is in the additive (if any) for each brand?

That is correct.

[Amalgam]

Oil companies have reciprocal refining agreements. In WA most of our fuels (diesel, petrol, avgas, Jet A) is produced by BP. Some are imported from Singapore. The fuel reseller will then add their own additive pack (if any) and retail it. There is an urban myth that BP keeps the best above spec fraction for themselves.

BP retails both normal diesel and Ultimate diesel in WA.

[Ryeman]

I remember back to the days when Shell advertised their petrol had ICA (something like ignition control additive) so unless that was deceptive advertising I'm not sure why they don't all advertise like that any more.
unless you believe Ultimate is 'the ultimate'.

[Amalgam]

Just fuelled the Passat with BP Ultimate and Penrite DPF Cleaner.

Let's see what happens.

So my summer sojourn is over and the results and some new questions are in :

1/ Running on BP Ultimate diesel and Penrite DPF Cleaner ( 1x bottle to a full tank ) the engine seemed to run quieter especially at cold idle.

2/ The MFD indicated oil temp was slightly elevated to 103C at 120Km/H and returned to 98C at 90Km/H. During our Christmas 2013 trip, the oil temp remained a rock solid 98C regardless of speed and the ambient temp was 10C higher. It would spike to 107C on occasions, which I put down to the car preforming an active DPF regen. No temp spikes this year, just a constant 103C. The only other variable is that this year we are running Valvoline SYNPOWER XL III 5W-30 (504/507) rather than the dealer standard.

3/ On the return home, I was forced to refuel with United diesel. The DTE was suggesting that I wouldn't make it to the next BP/Caltex servo. In hindsight, I should have done a splash and dash, but it was getting late and I just couldn't be bothered. The engine ran OK for the rest of the trip home, but since then it has been very noisy like a Triton. It seems to drive OK, just truck like noise.

Should I just run it dry before topping it up, top it up sooner, use an additive and if so which one??


Thanks

[Transporter]

Run it bit more down if you're bellow 1/2 the tank. If you're above the 1/2 tank, let it drop to 1/2 tank and fill up. I'd use Moreys Diesel Smoke Killer or Liqui Moly diesel additive.

[kaanage]

So my summer sojourn is over and the results and some new questions are in :

1/ Running on BP Ultimate diesel and Penrite DPF Cleaner ( 1x bottle to a full tank ) the engine seemed to run quieter especially at cold idle.

2/ The MFD indicated oil temp was slightly elevated to 103C at 120Km/H and returned to 98C at 90Km/H. During our Christmas 2013 trip, the oil temp remained a rock solid 98C regardless of speed and the ambient temp was 10C higher. It would spike to 107C on occasions, which I put down to the car preforming an active DPF regen. No temp spikes this year, just a constant 103C. The only other variable is that this year we are running Valvoline SYNPOWER XL III 5W-30 (504/507) rather than the dealer standard.

I always expected that the DPF cleaners would increase combustion temperature as well as lowering the DPF regeneration temperature, else they'd only end up increasing the amount of ash buildup in the DPF. This pretty much confirms it, IMO.

3/ On the return home, I was forced to refuel with United diesel. The DTE was suggesting that I wouldn't make it to the next BP/Caltex servo. In hindsight, I should have done a splash and dash, but it was getting late and I just couldn't be bothered. The engine ran OK for the rest of the trip home, but since then it has been very noisy like a Triton. It seems to drive OK, just truck like noise.

Should I just run it dry before topping it up, top it up sooner, use an additive and if so which one??

Thanks

I'd use another additive straight away.

[Greg Roles]

Yep most DPF cleaners are just liquid hydrocarbons, such as Toluene. They just up the burn temps to aid the passive DPF burn. Any proper cleaner has actual catalyst such as Ceruim in it, will have to investigate the Penrite one, as I like that brand - for oil anyway.

On my new common rail Yeti, given the MK6 TDI HPFP is the weak link historically ( supposedly now on third pump revision ) I keep a bottle of Moreys in the boot, and will religiously use it every top up, from the major brands if at all possible. Lubricity is the key for common rail.

[CardinalSin]

Yep most DPF cleaners are just liquid hydrocarbons, such as Toluene. They just up the burn temps to aid the passive DPF burn. Any proper cleaner has actual catalyst such as Ceruim in it, will have to investigate the Penrite one, as I like that brand - for oil anyway.

On my new common rail Yeti, given the MK6 TDI HPFP is the weak link historically ( supposedly now on third pump revision ) I keep a bottle of Moreys in the boot, and will religiously use it every top up, from the major brands if at all possible. Lubricity is the key for common rail.

Do you know where there's a specification of the contents of Moreys diesel smoke killer and diesel conditioner?
The claims for up to 10% increased power and up to another 5 cetane points etc from just 1:650 mix is very impressive but what are we putting in the fuel and are those claims justified?
It would certainly be economical at about $1.50 for a 40L fill up.