Booked our L405 in for its annual service at the main dealer at the end of this month.

They have emailed to recommend having the following done so what are the thoughts (necessary/ worth it or not)?

Two recommendations to be carried out on the day, these treatments are recommended to be carried out annually:

Emissions Control Service - This is a treatment that goes down your fuel line and cleans out the injectors and the fuel system, which are the parts that our technicians are unable to reach. The treatment helps to reduce emissions for MOT tests and can also help improve your miles per gallon.

Air conditioning Decontamination - We clean out the heating and ventilation system with a disinfectant. We put an antibacterial treatment through the system which cleans out all of the bacteria, mould and fungi that builds up in the vents over time, meaning when you use the system you're breathing in purer air, again, it also helps prolong the life of the system and components for both heating and cooling the air in your vehicle.

These are £29.99 each if you'd like one carried out or you can get both for £39.99, would you like either or both treatments added to your appointment? If so, please respond to this email.

I would not bother with either.

I do use this in the tank of my Diesel cars though .

https://www.powerenhancer.co.uk/archoil-ar...hesis.html overfinch modified

+1 for not bothering, I took a Jag for a service with less than 10K miles on from new and had to listen to a load of bo11ocks about the build up of laquer and other nasties - all just scare tactics. I've since heard from a service advisor that they get a kickback for every dose they sell

[quote="pld118"]

Emissions Control Service - This is a treatment that goes down your fuel line and cleans out the injectors and the fuel system, which are the parts that our technicians are unable to reach. The treatment helps to reduce emissions for MOT tests and can also help improve your miles per gallon.


It would be interesting if you showed them this extract from WSM and asked them why are they are doing this against JLR policy?

Recent years have seen the introduction of 'DPF cleaning fluids' to (non JLR approved) aftermarket sales. These
products claim to reduce the temperature that the soot reaction takes place. It should be stressed that, during the
vehicle development activity, every effort is made to generate DPF regeneration temperatures whilst maintaining safe
levels for all other vehicle components. Unauthorized use of the aftermarket fluids produces a significant risk to soot
burn rates and DPF peak temperatures real world driving conditions. These fluids are not authorised for JLR use. 2018 SE SDV8 4.4 Byron Blue

I was going to post similar - they're not saying DPF restorative treatment (which the JLR notice applies to specifically) but there is a prohibition on fuel additives across most manufacturers unless specifically authorised on a per-vehicle basis, this also applies to 'engine flush' and oil additives.

The problem is, the dealer tech's know this but the call centres earn bonus on upselling these 'treatments'...

BTW, the aircon treatment - or 'aircon debug' as it's known can be bought on fleabay for £5 for a reasonable quality one, essentially you just put the aircon on full, low temp, recirculation, push the button and leave the can in the car with the engine running for 10 mins, then shutdown and vent the car for another 10 mins.

Upselling money making schemes
Tell em to stick it 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory and clear glass = "Rory"
New Defender D300 90 on order so "Rory" will be going to a new home....!
1974 Series 3 Lightweight = "Millie"
My preferred specialist: www.glenrands.co.uk
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All the dealerships I've worked in, I refused to 'fit' oil or fuel additives - unless there was a TQ raised and authorised (PSA were happy for fuel additives - but only theirs, to be used in very specific circumstances) I was once told if I didn't use them I'd be given a written warning, I took a screenshot of the prohibition and attached to each jobcard where there was an additive line on it - never got the written warning.... that was Vertu / BSM, glad to see the back of 'em.
They have upsell targets per vehicle, which is sort-of fine if you're a filter spinner working on older stuff, not so good for a diag tech mainly working on in-warranty vehicles with low mileage / age. which means you're always getting marked down on your performance and rarely hit any bonus.

The BMW dealer that services my girlfriend's 2008 BMW offers/recommends the fuel line treatment. She and I discussed it and agreed that they could do it, as it gives them a bit of extra margin and so may discourage them from "finding" other work that "needs doing", on the basis it is not that expensive and shouldn't do any harm.

There has never been any offer of the air con treatment and I would not bother with it if offered as if the system is on auto all the time and so runs at reasonably high volume from time to time and so should clear bacteria etc out in normal use.

I've never been offered these at the LR dealer. Only Range Rovers since 1988

Always offered and always declined by our dealer, sometimes they are quite pushy! Sold - Bell a 2015 MY16 Loire Blue Autobiography 4.4 SDV8
Previously George a 2007 MY07 Java Black VSE 3.6 TDV8
Previously a 04 MY04 Defender 90

Stratstones? or Gallstones as we know them...

The 'treatments' are usually pushed by the call centres / service receptionists, the tech's have to do a VHC (visual/video health check) where other work is identified - having 'treatments' on the job card won't dissuade tech's from identifying demonstrable additional work, TBH, no-one wants to sell or apply the treatments, they're just something that adds to the profit margin and doesn't benefit the tech or the customer.

Phoenix, Am I wrong to add the product I quoted above to my Diesel then? thx. overfinch modified

No that'll be fine, it's a fuel conditioner - basically it puts back or boosts levels of 'stuff' that are already in the fuel, most of which were reduced when biodiesel was forced upon us. I use Dipetane, which is very similar.
Back in the day, we used a cetane booster for the Dakar & G4 vehicles to counteract the effects of ageing that pre-positioning fuel dumps sometimes months in advance and having it 'sweat' in the sun until needed. Conversely, you can use AVTUR/JET-A1 in place of diesel in extreme low temperatures where even treated diesel will wax.

The additives most manufacturers don't want are typically things that increase burn temperature to burn off soot, the basic ones are just duty-paid kerosene with detergents. Of course, everything in the additive mix has to be combusted, not all of it plays nicely with emission control components when burnt.

Fuel conditioners typically put back some of the sulphur that used to be in diesel, which is a lubricant for the moving parts, newer fuel systems have been re-engineered to cope with lower sulphur levels but older systems certainly benefit, there is usually a biocide in the fuel conditioner as well.

Great, Thank you Phoenix. overfinch modified