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Black 2018 XJ Premium Luxury V6 D AUTO
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Discussion Starter · #1 ·
Hello
I have a XJ Premium Luxury V6 D AUTO. 2018. It had a "Manufacturers Jaguar Major Service" at the end of March (around 20k miles on the clock). I also had the DEF filled up at the same time. Since then I've driven 6 maybe 7 thousand miles and thought I should check if the DEF needs topping up (I saw a message flash up a little while ago, but it disappeared too quickly to see what it was). The DEF says about 1,100 miles, so I will top it up soon. From what I've read on here. I guess adding 10 litres should be okay. But what shocked me is it said oil change in 800 miles. Surely it shouldn't be due an oil change yet. It was a main dealer I went to for the service. But I did have an issue with them that makes me reluctant to rely on them. I'd appreciate people's thoughts.

Thanks
Tony
 

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Hello
I have a XJ Premium Luxury V6 D AUTO. 2018. It had a "Manufacturers Jaguar Major Service" at the end of March (around 20k miles on the clock). I also had the DEF filled up at the same time. Since then I've driven 6 maybe 7 thousand miles and thought I should check if the DEF needs topping up (I saw a message flash up a little while ago, but it disappeared too quickly to see what it was). The DEF says about 1,100 miles, so I will top it up soon. From what I've read on here. I guess adding 10 litres should be okay. But what shocked me is it said oil change in 800 miles. Surely it shouldn't be due an oil change yet. It was a main dealer I went to for the service. But I did have an issue with them that makes me reluctant to rely on them. I'd appreciate people's thoughts.

Thanks
Tony
Hi Tony.

The Adblu if saying 1000 miles should be fine adding 10 litres, but, take it carefully, don't want to overfill
I use Redex Adblu from Screwfix, around £21 per 10 litres

The oil.
If you've done 6k or 7k and most of that stop / start and around town, then yes, very likely needs doing, and quickly

Here's mine to date as an example for reference

Oil changes, dates and mileages
10.08.2018 @ 28,633 miles
12.12.2018 @ 33,009 miles - 4736 miles travelled between changes
11.06.2019 @ 36,956 miles - 3947 miles travelled between changes
12.11.2019 @ 44,074 miles - 7118 miles travelled between changes
13.03.2020 @ 47,050 miles - 2976 miles travelled between changes
24.08.2020 @ 52,282 miles - 5232 miles travelled between changes
20.03.2021 @ 57,279 miles - 4997 miles travelled between changes
23.06.2021 @ 60,858 miles – 3609 miles travelled between changes
23.09.2021 @ 64,030 miles – 3172 miles travelled between changes
13.02.2022 @ 68,083 miles – 4053 miles travelled between changes
22.07.2022 @ 72,106 miles – 4023 miles travelled between changes

DEF fluid top ups, dates and mileages
12.03.2018 12 litres @ 18,882 miles
Topped up in between times at Jaguar dealer, detail undetermined
12.12.2018 9.2 litres @ 33,009 miles
03.05.2019 6.0 litres @ 35,834 miles, 2,825 miles travelled between refills
07.10.2019 12 litres @ 41,916 miles, 6,082 miles travelled between refills
11.03.2020 10 litres @ 47,001 miles, 5,085 miles travelled between refills
22.08.2020 10 litres @ 52,265 miles, 5,264 miles travelled between refills
05.03.2021 10 litres @ 57,068 miles, 4,803 miles travelled between refills
31.08.2021 4 litres @ 61,943 miles, 4,875 miles travelled between refills
24.11.2021 10 litres @ 65,653 miles, 3,710 miles travelled between refills
19.05.2022 6.0 litres @ 69,578 miles, 3,925 miles travelled between refills
11.10.2022 10 litres @ 73,797 miles, 4,219 miles travelled between refills


Oil change done from the top, all nice n easy if DIY
I'd get it done asap

Cheers
Jim
 

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Plus 1 as Jim says on both counts.
Take it easy topping up DEF. I did mine quick and it splashed back when nearing the top making you think it’s full.

I’m like Jim, 3 or 4 oil changes a year depending on usage. If lots of short journeys it’ll need done at least 3-4k miles.
 
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Discussion Starter · #4 ·
I’m like Jim, 3 or 4 oil changes a year depending on usage. If lots of short journeys it’ll need done at least 3-4k miles.
[/QUOTE]

Hello Jim / Glenn
Concerning the oil. Almost all my mileage is motorway or major roads not in rush hour with cruise control at 50/60/70.
 

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Was it Jaguar used approved or A N Other dealer.
May NOT have been changed

That said, almost no matter what I'd be getting it done ASAP and at around 4-5k intervals moving forward.

A dealer will be circa £350 oil change
A good Indy around £180 therabouts
Once materials bought can be done quickly easily from engine bay for around £40

Jim
 

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Discussion Starter · #6 ·
It was an approved used from main dealer and service done at the same place. All my many years with company cars using main dealers, I'm afraid I have little faith in them and it seems even with such a prestigious make. I'll take your advice and get the oil changed

Thanks
Tony
 

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If the car is under warranty, take it back to the main stealer and get them to check the oil dilution: if it is above a certain number they may change the oil under warranty.

PS: welcome aboard - where are the pictures?
 

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Firstly I’d check the oil level to see where it is, anywhere near the top and it’s a do it now or regret later in my book.
There is no logic to regens or oil dilution although long motorway miles will help.
 

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It was an approved used from main dealer and service done at the same place. All my many years with company cars using main dealers, I'm afraid I have little faith in them and it seems even with such a prestigious make. I'll take your advice and get the oil changed

Thanks
Tony
Hi Tony. Welcome to the forum.
Post 2016, after a model "facelift", the XJ with the 3-litre V6 diesel has been subject to the phenomenon of oil dilution because of numerous uncompleted DPF regenerations. The upshot of this, as you have now experienced, is the algorithm that calculates this oil dilution will indicate that an oil change is needed way before the "scheduled" service interval. See @JimC64 's post at #2.
This is a known issue by Jaguar and it could be argued that the dealer should have explained this when selling you the car.
Now, the XJ is a fabulous car and most owners (@JimC64 as an example) accept the regular oil changes as a small price to pay for driving what is arguably the finest car in its class. I know I would if my 2015 model was a year or so later model. As it is, I routinely change the oil in mine every 6 months anyway just for the long-term wellbeing on the engine.
 
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Six or seven thousand miles is the max you’d really want to leave any oil in a car anyway. I know you can leave it longer and in some cars, not the XJ, without any harm too but would you really want old dirty oil as the lifeblood lubricating, cleaning and cooling the engine?
 

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Discussion Starter · #11 ·
So I'm thinking about doing the oil change myself. I can borrow a vacuum pump. I've seen a few posts about changing the oil. Should I also change the oil filter at the same time and would I need something to be able to reset the warning message. Any other advice also appreciated
 

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So I'm thinking about doing the oil change myself. I can borrow a vacuum pump. I've seen a few posts about changing the oil. Should I also change the oil filter at the same time and would I need something to be able to reset the warning message. Any other advice also appreciated
Yes, absolutely change the filter at the same time, easily accessible and done. You will need something to reset the oil warning message

Glenn's just successfully used the Autel MK808 diagnostic machine, costs £320.00
** You may know someone local who can reset for you for beer money?

If that sounds steep, think of it this way

To look after your car properly, you may be 2-3 oil changes per year, depending on usage and mileage
Jaguar dealer would be approx £300 - £ 350 so that's around £1000.00
Jaguar Indy would be around £180.00 thereabouts, so that's around £540.00

Buying the vacuum pump, 3 x filters plus a 20 litre tub of oil plus the diagnostics would be circa £460.00 thereabouts and so easily paid for itself and then some

Thereafter an oil change is around £40 max

Hope it helps
Jim
 

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All these posts are accurate, depending on usage. I have very low mileage, probably less than 6,000 miles a year, mainly short journeys but with the occasional 100 to 200 mile journey, and so far seem to be getting away with 2 oil changes a year. It is not a difficult or dirty DIY operation.
 

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I know £320 sounds a lot of money for the initial outlay, but by doing it myself, as Jim says, it will have paid for itself in a year.
ALSO I see it as a regular supply of coffees when the few around me do there’s. So a win win 🤣
 

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My son has been looking round and found a suggested way to reset which involves opening the bonnet and pressing the brake and accelerator simultaneously to clear the warning message about the oil change
Nope, doesn't work Tony

Jim
 

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I know £320 sounds a lot of money for the initial outlay, but by doing it myself, as Jim says, it will have paid for itself in a year.
ALSO I see it as a regular supply of coffees when the few around me do there’s. So a win win 🤣
Lol the rate you drink coffee, it'll be cheaper at £20 a time or to buy one ;)

You're bang on with the first part though.

Jim
 

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7k is probably borderline max oil age for a non turbo petrol, so far too long for a soot chucker with a (reasonably) small oil capacity. Diesel collects and holds some of the particulates that are left over from the combustion process, and this acts like grit in the engine.

Obviously, the well known, well documented oil dilution issues of the EU6 engine in the x351 adds an extra dimension, as diesel fuel is a half decent cleaner but poor lubricant!
 
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