The tank of Eloys is normally good for 60,000 miles. So if a solid catalyst DPF regenerates about every 300 miles, that's 200 regens over 60,000 miles. At an average of 15 minutes/regen a lot of diesel is being chucked straight out of the exhaust for the regen. Could you save over £100 of diesel over the course of the life of the eolys tank and hence break even? I reckon you might.

Eolys gets a bad rep because refilling it was awkward-and it didn't automatically recognise when the reservoir was refilled. But I think the system wasn't that bad.

When I asked Mr Ford why the tank needed refilling after 36,000 rather than the 72,000 previously recommended his answer was low mileage users were using up the eolys faster since a fixed amount was injected at every fill up regardless of the amount of diesel bought. If the tank ran out and the owner ignored any lights it caused further damage. Thus Ford were robbing responsible people like myself because of the people who did a splash and dash every few days. They were not prepared to be flexible thus they lost my potential custom.

Some time ago to either depress myself or alternatively cheer myself up I calculated that over a regen approx 0.1 gallons of diesel is wasted. Wifes commute is 19 miles and fuel confuser says 52 mpg on average, 0.36 gallons,on a regen trip the fuel confuser says 40 mpg average, 0.47 gallans, as I said it was very approximate. If a regen happens every 300 miles say over 36,000 miles that is 120 regens and at 0.1 gallons a go thats 12 gallons, approx £75 at todays price. I know wasting diesel to protect the environment is a pain but I recon its cheaper than a tank of eolys at £100 and a bargain if a tank of eolys is more.

Correct me if I am wrong but I was told that eolys was needed because on some cars the DPF is to far away from the turbo to allow it to reach high enough temps during a regen.If that is a fact and an eolys equipped car still varies the injector timing to put unburned diesel into the DPF along with the eolys its game set and match to a non-eolys car.

A couple of years ago I was shown a DPF that had been removed from a car, wish I had taken a photo, the mechanic showed me that it was just an urban myth that they could be power washed clean. The power washer would probably clean the ends but never get down to the centre plus I believe the soot is bonded to the matrix and can only be removed by temps above 600 C.

The soot burns off. It's the ash from diesel and engine oill that clogs DPFs. I was sceptical about pressure washing-but some swear that it can be done.

That's why you can only buy BS EN590 diesel and manufacturers using DPF's specify a low ash fully synthetic oil at about £50 a change.

I read about a taxi driver some time ago that took his car to his favourite garage to have the DPF removed and cleaned out every couple of weeks at a cost of £30 or so. The garage were having a laugh, he could not understand that the regens were cleaning it for him while he drove.

That's tragic!

If I can find the thread I will post a link later.

Fantastic! I've got a whole load of goodies that the taxi driver could benefit from.

There's the magnet on the sump for a start. It collects any metallic particles and prevents the engine from seizing. I've been running one for 120,000 miles and the engine hasn't seized once-which proves that it works!

The diesel i drive pulls strong up to 5k

However, italian tune ups dont do anything apart from add to the problem. You are just dumping a whole load soot that wasn't needed.

Get it working in the max torque range, keep it burning efficiently, accelerate hard within max torque and make sure the coolant temperature reaches a level where an active DPF purge can begin.

I guarantee short journeys will significantly reduce the life of the DPF regardless of make/model.

Edited by OldSkoOL on 01/03/2012 at 15:23