mse wrote:

it helps save the planet

Its called evolution.

Lets not get on to climate change because i think you may have an appreciation of my view exactly opposite to my actual view

I know loads of farmers who do short hops without the DFP coming on...i wonder if the correct oil is being used, as mentioned that is one key reason why you might get the message.

Apparently how the dpf works means the regen drive is less harmful than the drives to fill it. Mike

2014 Facelift Discovery

So do farmers use different oil to us? Mine is using whatever they put in at the factory, so i can't see that being the wrong oil. My dpf light came on at around 6500 miles on the clock of which only about 2500 are motorway miles, id be surprised if farmers do 2500 miles in a year in their 4x4's, they are usually in their tractors.

in my 11MY i did a month of 5 mile journeys in it every day...no DPF light on. Mike

2014 Facelift Discovery

- mse perhaps you'll explain to me why a change in engine oil will change to build up of soot in the DPF which is from burnt fuel?

drdelrrs wrote:

- mse perhaps you'll explain to me why a change in engine oil will change to build up of soot in the DPF which is from burnt fuel?

Read the post above from oldcro he explains it. he actually mentioned it

It is true (read your manual) - part of the reason for using the correct spec oil is about SAPs and the impact of the DPF.

Its common (because the correct spec isnt commonly available) to use the wrong oil...in fact is the difference between A and B

Incidentally - i assume you know how a DPF works - i though you were mechanically minded

Because i appreciate the sarcastic reply ive just made a little more thought through: Ash deposit increases exhaust back pressure, which increase fuel consumption & loss of engine power & deposit shortens the life of a dpf. It comes mainly from engine oil which is why low ash oil must be used! Gone are the day's of one size fit's all & viscosity is not a specification! Mike

2014 Facelift Discovery

this may also help:
http://www.forddoctorsdts.com/articles/article-07-03.php

and

http://pmmonline.co.uk/technical/how-can-i...pf-failure Mike

2014 Facelift Discovery

mse wrote:

in my 11MY i did a month of 5 mile journeys in it every day...no DPF light on.

Ref the articles. quoted above ..
"
http://www.forddoctorsdts.com/articles/article-07-03.php

and

http://pmmonline.co.uk/technical/how-can-i...pf-failure "

Unlike the USA in the UK fuel and LR specified oils have complied for years. Unless an RRS owner replaced a recommended fuel or oil for non-synthetic or a cheap product then the engine oil will not alter the DPF's life.

drdelrrs wrote:

Ref the articles. quoted above ..
"
http://www.forddoctorsdts.com/articles/article-07-03.php

and

http://pmmonline.co.uk/technical/how-can-i...pf-failure "

Unlike the USA in the UK fuel and LR specified oils have complied for years. Unless an RRS owner replaced a recommended fuel or oil for non-synthetic or a cheap product then the engine oil will not alter the DPF's life.

If your Range Rover has a DPF fitted your handbook recommends the following engine oil;

SAE-5W-30 with the spec WSS-M2C934-B.

Google the spec for info on different makes and suppliers, or confirm the correct oil will be used before any service is carried out.

The choice is yours.

Last edited by oldcro on Fri Feb 15 2013 7:52pm. Edited 1 time in total

Double post again.