Oil black after service

Questions specifically about a Diesel powered C3 (usually engine or fuel related problems)
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My Name: Sthelensman123

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Posts: 2
Joined: Fri Jun 19, 2015 1:46 pm
Model: C3 2009-2013, New shape (A51)
Year: 2010 (60)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 45
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

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Should my oil be black after iv had oil changed at garage , had engine flushed and diesel adative
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My Name: Arfur Dent

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Posts: 3504
Joined: Sat Jul 23, 2011 3:47 pm
Model: C3 2002-2005, Original shape model
Year: 2002 (52)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 100000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
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Hi Sthelensman123, welcome to the forum.
Sthelensman123 wrote:Should my oil be black after iv had oil changed at garage , had engine flushed and diesel adative
It depends on what colour the 'diesel adative' was. Do you know what they added, and just as importantly, why it was added?
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My Name: Sthelensman123

Member
Posts: 2
Joined: Fri Jun 19, 2015 1:46 pm
Model: C3 2009-2013, New shape (A51)
Year: 2010 (60)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 45
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

Post

Arfur Dent wrote:Hi Sthelensman123, welcome to the forum.
Sthelensman123 wrote:Should my oil be black after iv had oil changed at garage , had engine flushed and diesel adative
It depends on what colour the 'diesel adative' was. Do you know what they added, and just as importantly, why it was added?
The garage said it would benefit my engine having the adative , don't know what they put in , I just don't believe they changed it , being so black
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User avatar
My Name: Arfur Dent

Guru
Posts: 3504
Joined: Sat Jul 23, 2011 3:47 pm
Model: C3 2002-2005, Original shape model
Year: 2002 (52)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 100000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
Has thanked: 336 times
Been thanked: 132 times

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Sthelensman123 wrote:
Arfur Dent wrote:Hi Sthelensman123, welcome to the forum.
Sthelensman123 wrote:Should my oil be black after iv had oil changed at garage , had engine flushed and diesel adative
It depends on what colour the 'diesel adative' was. Do you know what they added, and just as importantly, why it was added?
The garage said it would benefit my engine having the adative , don't know what they put in , I just don't believe they changed it , being so black
Some of the additives, ones based on molybdenum give a dark grey colour to the oil.

The oil should be golden yellow to orange depending on which oil was added. As you say, dark black is old engine oil, in fact very old engine oil. Sometime the new oil can pick up some of the old oil and discolour it, but your is reported to have been flushed, so this isn't the case.

Its not unheard of for garages to not change the oil filter or even the oil after paying for it, but it rare and needs to be investigated by a trading standards body.

Do you have any pictures of your dipstick and the oil? Maybe we could make some comparisons with other C3s?
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