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Tecdiver.
Member Since: 25 Jul 2021
Location: Liverpool
Posts: 77
  
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Yesterday I was all ready to do an oil change on my 2016 D4. Within 10 mins of starting I was already using common mechanic slang B@stard, tw@t, fugging hell. For some reason the bolts for the tray were seized solid. I only managed to remove one bolt with a breaker bar and rounded the head on a second. At that point I gave up and vacuumed the oil out instead. Am I missing something, surely it's not that hard to remove the undertray. The underside of the car is really clean and there is only slight surface rust in places. I am seriously thinking of grinding the heads off and binning the tray. Some mistakes are to good to only make once.
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 12th Jan 2022 6:54 am |
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OvalAutos
Member Since: 28 Dec 2018
Location: Cradley Heath
Posts: 382
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Very common I'm afraid. We always clean the bolts and copper grease them, for the next poor sod 
If they are properly seized, then the only option is an angle grinder to cut the head off. At the end of the day you can get away with just 4 bolts unless you're in to off roading and like smashing the underside of your car. Joe
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| 12th Jan 2022 7:34 am |
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Gary_P
Member Since: 03 May 2016
Location: Kent
Posts: 1670
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Tecdiver. wrote:Yesterday I was all ready to do an oil change on my 2016 D4. Within 10 mins of starting I was already using common mechanic slang B@stard, tw@t, fugging hell. For some reason the bolts for the tray were seized solid. I only managed to remove one bolt with a breaker bar and rounded the head on a second. At that point I gave up and vacuumed the oil out instead. Am I missing something, surely it's not that hard to remove the undertray. The underside of the car is really clean and there is only slight surface rust in places. I am seriously thinking of grinding the heads off and binning the tray.
Perhaps you’d be better to change the oil using the suction method as many recommend on here?
Good luck
Cheers Gary
-------------------------------------------
Discovery 4 HSE 2016MY
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| 12th Jan 2022 9:38 am |
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spiderlane
Member Since: 17 May 2017
Location: London
Posts: 119
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It's also worth using a 6 sided socket (rather than a 12) to reduce the risk of rounding off. My DeWalt impact driver made light work of mine but I could have probably done them with with a breaker bar.
Once off a clean up with a wire brush and a little copper grease will remove the pain for next time, as mentioned by Oval.
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| 12th Jan 2022 9:45 am |
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eightfoot
Member Since: 12 Apr 2015
Location: sunny essex
Posts: 806
 
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 most things that come off my d3 and d4 get a good dollop of grease before being refitted, it can make for getting dirty doing service jobs but its much better knowing that when you need to remove something its going to come off without fighting you 
ps i try not to use copper grease as in my experience it does tend to dry out over time and no longer stops things seizing up please excuse any grammer/punctuation mistakes,i'm thick,thankyou
current vehicles 2005 d3 2013 d4
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| 12th Jan 2022 11:47 am |
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nigethecat
Member Since: 11 Sep 2016
Location: Marnoch
Posts: 4244
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Quote: i try not to use copper grease as in my experience it does tend to dry out over time and no longer stops things seizing up
Are you sure you have a Discovery ? I can't think of anything on the car that won't need taking apart or replacing in the next 6 months I want to see the sweets before I get into your windowless van... I'm not stupid!
Corris Grey D4 Commercial SE 2016
Zermatt Sliver 2007 D3 SE manual (gone)
Indus Silver D4 HSE 2015 (gone)
Bonatti Grey D3 HSE 2006 (gone)
White D3 S (LHD) 2007 (gone)
Firenze Red D4 HSE 2014 (gone)
Black RRS 3.6TDV8 2008 (gone)
Rusty Green Defender 110 1997 (gone)
Black FL2 HSE 2013 (gone)
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| 12th Jan 2022 12:03 pm |
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N5Fav
Member Since: 28 Jan 2021
Location: LEICESTER
Posts: 134
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+1 for ceramic grease, I'm using it on more and more things now 1994 Defender 300tdi 110 commercial
2007 Disco 2.7 XS Buckingham Blue
1959 Standard 10 Coffe & Cream
1974 Vauxhall Magnum 1800 estate Olivine Starfire Green
1994 Renault 19 Cabrio
1995 Kawasaki GPz 1100
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| 12th Jan 2022 12:38 pm |
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beerbelly
Member Since: 07 Sep 2020
Location: teesside
Posts: 87
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any grease is better than no grease .  i use morris blue because i have it handy for my boat trailer wheel bearings
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| 13th Jan 2022 7:03 am |
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Tecdiver.
Member Since: 25 Jul 2021
Location: Liverpool
Posts: 77
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Thanks for the replies and suggestions. I went down the syphon route and did the whole job in 20 mins. Going to look at the 6 point socket suggestion as I have an impact driver. Some mistakes are to good to only make once.
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| 16th Jan 2022 8:58 am |
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Devon Z
Member Since: 14 Nov 2019
Location: Brixham Devon
Posts: 251
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Mine were a sod to get out when I first got it, found a old six sided 1/2 inch AF socket fitted best. Steve
*2005 RR Sport 2.7tdv6 HSE. Current project.
*98 Volvo V70R FWD, owned 14 years, future project.
*99 BMW Z3 30k miles owned from new.
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| 16th Jan 2022 10:36 am |
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Admirable
Member Since: 19 Jul 2015
Location: Fife
Posts: 1039
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Apply some heat, doesn't need a lot.
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| 16th Jan 2022 4:31 pm |
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