Millers Ecomax

[conkerman]

They often do.

The difference is in the additive pack added at the terminal.

Conks

 

[digby130?]

ive stopped using it for about a month and ive noticed that my car is alot more smokey under acceleration (PD130 engine @ 170bhp)...used ecomax last week and its now hardly smoking (driving exactly the same way!)

 

[conkerman]

im not saying it will defo happen.. but it all depends on the set up of the car... The culprit of internal damage though is detonation. Which is caused by lean running, which is caused by inbalance of fuel / air mix. Its a long winded thing.. but in short, higher cetane for diesel and higher octane for petrol offers more resistance to detonation.
Thats why i was on about highly tunes cars. In standard set ups, this problem shouldnt occur.

You sir, are 100% wrong on what the Cetane number of a diesel fuel is related to.

In simple terms, the cetane number of a diesel fuel is related to the ignition delay of the fuel when injected into the engine. A high cetane number goes bang straight away, low cetane number takes a while to go pop. This is the whole principal of operation for a diesel engine where the ignition source is the heat of compression of the air in the cylinder.

The main component of many diesel additive packs is a material called 2-ethyl hexyl nitrate. This material is explosive under the conditions in the combustion chamber and is the most commonly used Cetane Number Improver (CNI).

As a very simple rule. Octane Number and Cetane Number are completely opposite, as they are measures of two very, very different types of combustion.

As for failures on highly tuned engines, I can think of a couple of ways for internal damage,

1, Stuck injector.

2, Bad batch of fuel with (very, very) Low Cetane. Could cause excessive flame impingement on the Turbo/exhaust valve. Cetane number this bad would certainly be outside the scope of the spec we operate with.

3, Something else! Often an engine component overheating for any number of reasons. eg. Piston cooler jet blocked.

As a final note. A diesel engine will always be running lean....

Conks

 

[AlexGSi2000]

I purchased my Vectra diesel (2004 1.9cdti) towards the end of March this year.

Chose the car as I had to find mobility again quickly (after my accident), but on a budget - bearing in mind I do a lot of motorway miles. The Vectra fitted the bill.

I collected the car with 149,000 miles on the clock. - High, but with full service history & most of the mileage being from the first owner as motorway miles.

The bloke I purchased it off had owned it for a few years & treated it just like a Vectra - service once a year and thats that.

On the drive home I realised the car was holding back a little for its supposed 150Bhp, I put that down to the fact that the engine may need a little maintenance to bring it back to its former glory.
When I got home the bloke had left the remains of the oil from the last service in a bottle, it was some 10-40 cheap nasty stuff that claimed to be semi-synthetic.

Day after I got it home it saw an engine flush (yes I took the risk) and some 5-40 fully synthetic oil and cleaned up the EGR valve.
Straight away I noticed a difference, it felt livelier and sounded a little quieter.

Next fill-up I used some Millers EcoMax along with Shell fuel - over the next 4 / 5 tankful's, the difference was noticeable, definitely not placebo. Engine became even quieter, felt more responsive and the MPG increased. - only thing I can put it down to is the Millers EcoMax cleaning out the injectors.

I also chose to use the EcoMax to help lubricate the fuel system parts. - I tend to use it every other fill up.