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Patman
Member Since: 16 Aug 2019
Location: Cornwall
Posts: 314
  
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what an interesting topic to throw my hat in the ring my Derek (D3) has oil and filter every 6000 miles and to be honest given oil costs nearly £40 and a filter £10 i see it as irellevant. better safe than sorry its the blood that keeps us mobile
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 28th Jul 2021 4:06 am |
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galwaygreen
Member Since: 30 Oct 2011
Location: plymouth
Posts: 6525
 
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think a new engine is £15k...why risk it
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| 28th Jul 2021 10:58 pm |
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kirkyworld
Member Since: 01 Mar 2016
Location: Northampton
Posts: 566
 
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I would never swap the oil and not the filter. Mine's had 7 oil/filter swaps in 45k miles so far.
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| 29th Jul 2021 7:08 am |
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L319
Member Since: 14 Dec 2013
Location: Herefordshire
Posts: 2083
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When I worked for Rover, I was told that the fresh detergent in new oil tends to flush out any debris left when draining the old oil , so better to fit a new filter each oil change than having it dumped into an already contaminated filter.
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| 29th Jul 2021 8:17 pm |
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Hardware
Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 13041
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With some of my previous cars, I occasionally used flushing oil to make sure the new oil and filter were starting life in the cleanest possible environment.
Given the D3/4 depends greatly on having the right stuff in it, I've not done it as the flushing stuff is very "thin". .
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  ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms
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| 29th Jul 2021 8:25 pm |
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Farmer Chalk
Member Since: 06 Mar 2013
Location: Independent Republic of Kentishshire.
Posts: 4197
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Hardware wrote:With some of my previous cars, I occasionally used flushing oil to make sure the new oil and filter were starting life in the cleanest possible environment.
Given the D3/4 depends greatly on having the right stuff in it, I've not done it as the flushing stuff is very "thin".
Interesting…. But I will avail you all of my experience of flushing oil …
Did it years ago thinking I was doing the right thing on one of my old cars…my thoughts clean it all out and throw in some brand new super oil and new filter and my car will go 100mph faster…alas once completed had the dreaded oil pressure light come on…
The flushing oil had dislodged all the years of sludge and had totally blocked the gauze filter on the bottom of the oil pump…necessitating a new oil pump…
Hence I have never used flushing oil again…
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| 30th Jul 2021 7:43 am |
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Gary_P
Member Since: 03 May 2016
Location: Kent
Posts: 1682
 
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My much respected independent flushed mine through when serviced recently. Gary
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Discovery 4 HSE 2016MY
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| 30th Jul 2021 8:07 am |
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Farmer Chalk
Member Since: 06 Mar 2013
Location: Independent Republic of Kentishshire.
Posts: 4197
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I knew you was going to ask me that…and to be honest Mikey I can’t remember…I’ve had loads over the years that I have tinkered with…. And in fairness it’s likely to have been 20 years ago probably before the advent of super sexy oils.. the oil pump pick up was in the sump and it had a holey plate on it… the sludge and crud dislodged had been sucked up against the plate…
You’ve set me off trying to work out what engine it was.
I would like to think with regularly servicing and modern oils it’s less likely to happen but I’m still not using it…. 
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| 30th Jul 2021 8:08 am |
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Disco_Mikey
Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20858
 
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Was going to say, it's much less of a problem now with modern synthetic oils
I use flushes in all of my own cars, and family cars for 2 years now, without issue. Anyone who's driving our courtesy car comments on how well it drives, even with 130k miles on it  My D3 Build Thread
TDV8 Retrofit Build Thread
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| 30th Jul 2021 8:36 am |
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Farmer Chalk
Member Since: 06 Mar 2013
Location: Independent Republic of Kentishshire.
Posts: 4197
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Our FL2 has also 130k on it and drives superbly…you would certainly never guess the mileage without the speedo reading.
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| 30th Jul 2021 10:03 am |
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