It’s usual to regularly change your oil and filter but is the filter change strictly necessary? If I’m changing my oil every 6,000 miles do I really need to replace the (Mann) filter at the same time? Is it knackered at 6,000 miles? I’m happy to do it if it’s really needed...
4th Jul 2021 10:30 pm
aja4x4
Member Since: 14 Apr 2019
Location: Westbury
Posts: 2459
You dont really want to cut corners with these engines and filters arent that expensive.Andrew
D3 2.7tdv6 2005
D4 3.0 SDV6 Commercial died and gone to LR heaven
D5 3.0 SDV6 HSE
4th Jul 2021 10:41 pm
Admirable
Member Since: 19 Jul 2015
Location: Fife
Posts: 1011
What mileage do you think it should be changed at?
4th Jul 2021 10:44 pm
kajtzu
Member Since: 11 Aug 2017
Location: Helsinki
Posts: 6566
Re: Why change the oil filter?
kevofcov wrote:
It’s usual to regularly change your oil and filter but is the filter change strictly necessary? If I’m changing my oil every 6,000 miles do I really need to replace the (Mann) filter at the same time? Is it knackered at 6,000 miles? I’m happy to do it if it’s really needed...
If you’re changing oil every 9656,064 kilometers (or once per year, whichever comes first I assume) I think you can splurge on a 20 eur oil filter, too.
You could change the interval from 9656,064 kilometers to whatever JLR suggests in the maintenance schedule or once per year, again whichever comes first.
4th Jul 2021 10:48 pm
Patman
Member Since: 16 Aug 2019
Location: Cornwall
Posts: 314
it should be changed 6 months or 6000 miles
Its a simple cheap job and it filters THE most important part of an engine
4th Jul 2021 11:11 pm
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8072
Where does it say that in the maintenance schedule off a D4?- you may change your opinion when you see the price of D4 oil It can when others can't,
It will when others won't,
It goes where others don't.
To answer the question in the title, no, it is not necessary to change at 6,000 miles.
It is necessary to change it at some point though, because it fills up with muck. As it fills up it becomes less efficient at catching muck. So at some point it needs to be changed or the much starts to do damage to the engine. Different operating conditions also have different rates of muck being produced so have different requirements for change.
Of course, it is not the distance the vehicle has travelled that actually matters, but the total number of revolutions of the engine. So for over 100 years the distance travelled has been used since it is easier to record, and 6,000 miles is a considerable number of engine revolutions, especially if not all are made in top gear. It is an arbitary number that represents a bit less than the median distance of all typical operating conditions.A vaccine does not stop you catching a virus, or passing it on, or getting ill from it, really ill. It does reduce the likelyhood of you dying when really, really ill. Stay Alive - KEEP AWAY FROM PEOPLE.
service interval is 16000 miles / 26000 km / 12 months
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the 6 months interval is from Service Interval Plan 2 ... which applies in many countries, most of which are hotter than UK..
Dean
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2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms
5th Jul 2021 12:54 pm
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
I wouod say new oil = new filter, mainy so you can take a look see at the filter for any unwanted shiny bits!
Mega job if engine blows, and as the cars age it will not be financially viable for many.
If you noticed shiny bits in the filter, what would a realistic course of action be.. presumably sell it quickly is the cheapest one but what else could you do?
We used to have a transit that used oil like an alcoholic. We just used to change the filter as the oil was always being changed.1972 Range Rover Classic 2 door V8
2013 Land Rover Discovery 4 HSE - SCRAPPED
2016 Land Rover Discovery 4 Landmark
2022 Volvo XC40 T5 PHEV 282HP FWD 3 cylinder!
To answer the question in the title, no, it is not necessary to change at 6,000 miles.
It is necessary to change it at some point though, because it fills up with muck. As it fills up it becomes less efficient at catching muck. So at some point it needs to be changed or the much starts to do damage to the engine. Different operating conditions also have different rates of muck being produced so have different requirements for change.
Of course, it is not the distance the vehicle has travelled that actually matters, but the total number of revolutions of the engine. So for over 100 years the distance travelled has been used since it is easier to record, and 6,000 miles is a considerable number of engine revolutions, especially if not all are made in top gear. It is an arbitary number that represents a bit less than the median distance of all typical operating conditions.
I agree. I'm doing 12,000 miles a year. If I changed oil and filter at 12,000 miles everybody would be happy. I always change the oil at 6,000 miles. If I dont the filter change till 12,000 miles what difference do it make to the filter. Zero me thinks. Maybe a slightly easy life if anything.
26th Jul 2021 7:01 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10360
you could change it every other change if you really want.
i.e if you are going more frequent oil changes that specified
26th Jul 2021 7:29 pm
philm
Member Since: 02 Oct 2016
Location: Manchester
Posts: 732
You should change the filter more often than the oil. It collects microscopic debris and reduces the oil flow. YOU all know the outcome of low oil pressure on these engines. L633 Defender
Range Rover Velar-gone
Discovery 4 Landmark-gone
Gap IID Tool
26th Jul 2021 7:59 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13604
Out of curiosity does the D4 have an engine oil filter bypass in case a filter blocks or is that just on the D3 please
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... All LED interiors lights, DRLs, Spare Wheel protector.
YOU all know the outcome of low oil pressure on these engines. 
