Advertise on DISCO3.CO.UK
Forum · Gallery · Wiki · Shop · Sponsors
DISCO3.CO.UK > Maintenance & Mods (D4)

Bypass Oil Filter
Post Reply  Down to end
Page 1 of 2 12>
NC500
 


Member Since: 18 Sep 2017
Location: On the NC500
Posts: 549

Scotland 2014 Discovery 4 3.0 SDV6 HSE Auto Firenze RedDiscovery 4
Bypass Oil Filter

Hi all,

I use my 150k Disco 4 to provide private tours of the NC500. As such, it makes a lot of short duration journeys and spends a great deal of time at low revs at <30mph whilst travelling the single track roads. It has its oil and filter changed every 5000 miles and yet I still regularly get soot contamination build up of between 1.5% and 3% (2% being the critical level). For those that don't know, soot acts as an abrasive paste when contamination levels rise too far.

Therefore, I have decided to install a bypass oil filter to the oil system in addition to the existing full flow oil filter (see video)



I intend to route the take off from the oil pressure switch using a splitter and routing the clean oil return line via the oil extraction port. Has anyone else fitted a bypass oil system? If so, any other locations I should/could consider?

Thanks
  
Post #23473969th Sep 2023 7:38 am
View user's profile Send private message View poster's gallery Reply with quote
thisandy
 


Member Since: 28 Jan 2018
Location: Pembrokeshire
Posts: 308

Wales 2010 Discovery 4 3.0 TDV6 HSE Auto Zermatt SilverDiscovery 4

Are you planning to run the filter while driving or just when parked.Would there be loss of pressure and volume of oil during engine running.
  
Post #23474309th Sep 2023 4:51 pm
View user's profile Send private message View poster's gallery Reply with quote
NC500
 


Member Since: 18 Sep 2017
Location: On the NC500
Posts: 549

Scotland 2014 Discovery 4 3.0 SDV6 HSE Auto Firenze RedDiscovery 4

It’s in use when the engine runs. The bypass filter takes a litre of oil so the volume added at oil change would need to be increased. No change in oil pressure.
  
Post #234745010th Sep 2023 5:52 am
View user's profile Send private message View poster's gallery Reply with quote
NJSS
 


Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 10840

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Waitomo GreyDiscovery 4

The video says that the filter removes water; but where does that water go? Is it retained in the filter?

Good luck - an interesting project.

NJSS
  
Post #234745710th Sep 2023 7:15 am
View user's profile Send private message View poster's gallery Reply with quote
jenseneverest
 


Member Since: 12 Jun 2017
Location: somewhere
Posts: 769

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Manual Zambezi SilverDiscovery 3

Would it not be easier to simply change oil every 2.5k miles ?
Have you checked your injectors ?

Every 2nd change on mine, i would flush it twice with 3liters of oil, just to clear what's left in the gallery's and cooler, the normal drain and refill dose not get it all out.
  
Post #234746010th Sep 2023 8:45 am
View user's profile Send private message View poster's gallery Reply with quote
NC500
 


Member Since: 18 Sep 2017
Location: On the NC500
Posts: 549

Scotland 2014 Discovery 4 3.0 SDV6 HSE Auto Firenze RedDiscovery 4

NJSS wrote:
The video says that the filter removes water; but where does that water go? Is it retained in the filter?

Good luck - an interesting project.

NJSS


The filter is cellulose which absorbs the water
  
Post #234756211th Sep 2023 1:52 pm
View user's profile Send private message View poster's gallery Reply with quote
Hardware
 


Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 13037

United Kingdom 2011 Discovery 4 3.0 SDV6 XS Auto Sumatra BlackDiscovery 4

How long timewise is your 5k oil change?

Would it not be easier, as suggested, to go down to 2.5k ? Or, given yours is a D4 and needs unobtainium C1 oil, syphon 1/2 of it out once a month and top-up with nice clean stuff.
 .


Dean
====================================

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 Sad ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms 
 
Post #234757511th Sep 2023 3:58 pm
View user's profile Send private message View poster's gallery Reply with quote
M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8243

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

or use low box every 3rd trip!
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #234759111th Sep 2023 6:39 pm
View user's profile Send private message View poster's gallery Reply with quote
NC500
 


Member Since: 18 Sep 2017
Location: On the NC500
Posts: 549

Scotland 2014 Discovery 4 3.0 SDV6 HSE Auto Firenze RedDiscovery 4

Hardware wrote:
How long timewise is your 5k oil change?

Would it not be easier, as suggested, to go down to 2.5k ? Or, given yours is a D4 and needs unobtainium C1 oil, syphon 1/2 of it out once a month and top-up with nice clean stuff.


An oil change happens every 6 weeks or so. The whole reason for the install of the bypass filter is to extend oil changes and reduce cost. Reducing intervals will do the opposite and increase costs!

The bypass system is £270 including hoses and connectors. I believe extending the oil changes to 8k intervals will reduce my annual oil and filter costs by 40% and so the payback period will be about a year. I’ll be quids in thereafter PLUS I will have zero contaminants in the oil and thus extend engine life.

Win, win
  
Post #234759511th Sep 2023 7:40 pm
View user's profile Send private message View poster's gallery Reply with quote
Breg90
 


Member Since: 04 Feb 2017
Location: Falkirk
Posts: 360

United Kingdom 2008 Discovery 3 TDV6 XS Manual Java BlackDiscovery 3

Interestingly I am looking at bypass oil filtration at work for compressors and gas turbines. The 3 micron nominal and 1 micron ultimate filtration and water removal makes me think that the filter element is the same cellulose element that the various vendors are trying to punt at me commercially.

Some thoughts:

1/. Water removal - irrelevant, unless you sink your car.
2/. You might find that you start to strip the oil additives out of the oil at 1 micron. Advise I have been given is to change 20% of the oil every so long. Not got to the bottom of this yet.
3/. What flow rate will this take - you are robbing some of the oil that would have gone to the bearings. I'd want to see an electric oil pump drawing separately from the sump and returning to the sump so that the oil system is not interfered with.

Wondering what the root cause of the soot issue you have is. Is it poor filtration? Or is is the duty cycle of the engine, i.e. frequent short journeys so engine does not warm up and DPF does not regen properly? If so not sure the filter will solve this. I'd want be more inclined to look at a remote operated block heater (the FBH) so that the engine is warm and not cold starting - gives reduced fuel dilution of oil and reduced cylinder bore wear & go for a 45 min run once a month to make sure it gets hot and regens the DPF.
 Series one 1949 - in bits, chassis is strapped to the ceiling in my garage (beside the canoe)
LR 90 - In bits
Disco 3 - currently in bits 
 
Post #234759611th Sep 2023 8:21 pm
View user's profile Send private message View poster's gallery Reply with quote
M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8243

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

Changing the oil (C1) as frequently as you are you could use (C3) as a cheaper option, C3 is recommended in the handbook if C1 is not available, although I consider my previous suggestion of doing every third trip in low ratio a better solution, 30mph can easily be obtained in low ratio.
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #234761512th Sep 2023 5:51 am
View user's profile Send private message View poster's gallery Reply with quote
NC500
 


Member Since: 18 Sep 2017
Location: On the NC500
Posts: 549

Scotland 2014 Discovery 4 3.0 SDV6 HSE Auto Firenze RedDiscovery 4

Breg90 wrote:
Interestingly I am looking at bypass oil filtration at work for compressors and gas turbines. The 3 micron nominal and 1 micron ultimate filtration and water removal makes me think that the filter element is the same cellulose element that the various vendors are trying to punt at me commercially.

Some thoughts:

1/. Water removal - irrelevant, unless you sink your car.
2/. You might find that you start to strip the oil additives out of the oil at 1 micron. Advise I have been given is to change 20% of the oil every so long. Not got to the bottom of this yet.
3/. What flow rate will this take - you are robbing some of the oil that would have gone to the bearings. I'd want to see an electric oil pump drawing separately from the sump and returning to the sump so that the oil system is not interfered with.

Wondering what the root cause of the soot issue you have is. Is it poor filtration? Or is is the duty cycle of the engine, i.e. frequent short journeys so engine does not warm up and DPF does not regen properly? If so not sure the filter will solve this. I'd want be more inclined to look at a remote operated block heater (the FBH) so that the engine is warm and not cold starting - gives reduced fuel dilution of oil and reduced cylinder bore wear & go for a 45 min run once a month to make sure it gets hot and regens the DPF.


Thanks for this commentary. Here is what I know:

Millers Oils (who supply my C1 oil and also do my oil analysis) tell me that additives are all sub 1 micron so will not be effected by the filter.

Water contamination is possible via a failing oil cooler.

The filter diverts <5% of oil flow from the system but the filter also increases available volume by 20% (ish).

Finally, the car gets two 125 mile drives at 50mph plus per week on the journey to and from Inverness to collect and return guests. The DPF gets regular opportunities for regens. The car also rarely has a cold start - I religiously use the FBH to preheat each day (when the weather is cool enough to operate) and once the engine is warm, it’s doesn’t cool down all day as one journey is made directly after the other. I appreciate I am using my car in a highly abnormal manner compared to most, hence the regular oil changes and oil analysis.

Finally, some comments of my own and I don’t want to be disrespectful of anyone on the forum with my next comment/ observation so please just take it as I intend. As far as I can tell ( and I have asked several times), I believe I am the only member of the forum that sends every batch of oil away for oil analysis after every change. Doing this makes me aware of what condition the oil is in whereas those who don’t undertake regular analysis are unaware of what is happening inside their own engines (and who therefore are in blissful ignorance of what they can’t see). I have a strong suspicion that many D3 and D4 diesel engines are running with high levels of soot.
 

Last edited by NC500 on 12th Sep 2023 6:56 am. Edited 1 time in total 
Post #234762012th Sep 2023 6:38 am
View user's profile Send private message View poster's gallery Reply with quote
Maddpuk
 


Member Since: 25 Aug 2023
Location: Barnard Castle
Posts: 40

United Kingdom 2014 Discovery 4 3.0 SDV6 HSE Auto Corris GreyDiscovery 4

@NC500. Alas, I’ve not managed to get around the route once yet, but one day. For fuel, do you use regular diesel or always Premium?
 2014 Discovery 4 HSE
2013 Insignia Sports Tourer BiTurbo 4x4 SRi
2004 S2000
Honda FourTrax TRX300
- Paul 
 
Post #234762312th Sep 2023 6:55 am
View user's profile Send private message View poster's gallery Reply with quote
NC500
 


Member Since: 18 Sep 2017
Location: On the NC500
Posts: 549

Scotland 2014 Discovery 4 3.0 SDV6 HSE Auto Firenze RedDiscovery 4

We don’t have premium diesel in the north Highlands!!! 😂
  
Post #234762412th Sep 2023 6:57 am
View user's profile Send private message View poster's gallery Reply with quote
jenseneverest
 


Member Since: 12 Jun 2017
Location: somewhere
Posts: 769

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Manual Zambezi SilverDiscovery 3

Must admit never bothered to have the disco 3 oil analysed, but at work we have all the euro5 and 6 diesels checked every other oil change. The euro 6's generally have higher soot levels, those that flag up as an issue normally have blocked EGR valves and and/or underlying exhaust issues, blocked or partially blocked DPF / SCR from either overfilled oil, turbo passing oil or repeated regen time outs.

This filter sounds like a decent solution, would be interested in the results if / when fitted Thumbs Up
  
Post #234763812th Sep 2023 11:42 am
View user's profile Send private message View poster's gallery Reply with quote
Display posts from the last:  
Post Reply Back to top
Page 1 of 2 12>
Jump to:  
Previous Topic | Next Topic >


Posting Rules
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum



DISCO3.CO.UK Copyright © 2004-2024 Futuranet Ltd & Martin Lewis
DISCO3.CO.UK RSS Feed - All Forums

DISCO3.CO.UK is independent and not affiliated to Land Rover.
Switch to Mobile Site