Help please - oil found in water (CDTi)

Mel Dawson · 28th November 2008, 20:41

Checked my rad level today & found loads of oil in water,checked engine oil level & it was,o.k engine is running alright no missing checked oil filler cap no condensation any ideas apart from someone put oil in rad by mistake.
Thanks Mel.

T-Cut · 28th November 2008, 21:26

Has this oil appeared recently? How much is 'loads'? What does it look like (a dark brown layer/globules, a light golden 'mousse', yellow froth, ??). Was it apparent last time you checked the coolant level? When was that? Who could this 'someone' be?

TC

JohnDotCom · 28th November 2008, 21:31

This could well be a Oil Cooler Failure.
Its happened on BMW's where the water turns very Black and oily.
Not heard it on ours though.
It happens when this fails and allows High Pressure oil to push its way in to the much lower pressure Cooling system.

T-Cut · 28th November 2008, 23:40

Quote:

Originally Posted by JohnDotCom

This could well be a Oil Cooler Failure. - - - - Not heard it on ours though.

I have. The exchanger matrix corrodes till it allows cross-flow. The only mixing is though the water pump which is less emulsifying than an internal leak into the engine oil. It's less moussified and darker in the coolant. Sounds a likely answer to me.

TC

Mel Dawson · 29th November 2008, 08:18

I only brought the car 3 days ago from a garage in wales 270 miles away from me ,I have phoned him & he told me to take to local garage to repair & he will pay ( I Hope) so thats what i will do today,I will post problem on here when i know what it is.

Cheers Mel.

cjmillsnun · 29th November 2008, 10:30

Sounds like you found a good dealer to buy the car from.

Suggest to the local repairer (try and find a BMW specialist or a Rover Specialist) that it is the engine oil cooler so that they look at it first.

I've certainly heard of it happening on a couple of M74R engines.

Jules · 29th November 2008, 12:03

All CDTi owners & Petrol for that matter should check their antifreeze is RED as was supplied from the factory.
Spec is OAT Long Life

Don't use the cheaper Blue or Green Antifreezes. :lol:

Departed · 29th November 2008, 12:53

Quote:

Originally Posted by Jules

All CDTi owners & Petrol for that matter should check their antifreeze is RED as was supplied from the factory.
Spec is OAT Long Life

Don't use the cheaper Blue or Green Antifreezes. :lol:

Halfords have their own brand of OAT known as advanced. Suitable for all my cars, luckily.

T-Cut · 29th November 2008, 12:59

Quote:

Originally Posted by lowedb

Halfords have their own brand of OAT known as advanced.

And it's more expensive that the 100% OAT concentrate sold by Vauxhall depots for example. I believe Halford's antifreeze is already diluted to 50% so you fill it straight from the bottle. Of course, you pay extra for that.

TC

sf8752 · 29th November 2008, 16:01

is ther a part number for the oat from vauxhall and how much is it
steve..

28th November 2008, 20:41	#1
Mel Dawson Passed Away 2004 facelift saloon cdti se connoisser Join Date: Nov 2008 Location: Brixham Posts: 765 Thanks: 88 Thanked 22 Times in 17 Posts	Help please - oil found in water (CDTi) Checked my rad level today & found loads of oil in water,checked engine oil level & it was,o.k engine is running alright no missing checked oil filler cap no condensation any ideas apart from someone put oil in rad by mistake. Thanks Mel.

28th November 2008, 21:31	#3
JohnDotCom * Rover 75 FaceLift Tourer CDTi 170BHP Auto ConnSE 2005 Model Starlight Silver Join Date: Nov 2006 Location: Abergele Posts: 28,735 Thanks: 0 Thanked 6 Times in 5 Posts	This could well be a Oil Cooler Failure. Its happened on BMW's where the water turns very Black and oily. Not heard it on ours though. It happens when this fails and allows High Pressure oil to push its way in to the much lower pressure Cooling system. Last edited by JohnDotCom; 28th November 2008 at 21:33..

29th November 2008, 08:18	#5
Mel Dawson Passed Away 2004 facelift saloon cdti se connoisser Join Date: Nov 2008 Location: Brixham Posts: 765 Thanks: 88 Thanked 22 Times in 17 Posts	Oil in rad CDTI SE I only brought the car 3 days ago from a garage in wales 270 miles away from me ,I have phoned him & he told me to take to local garage to repair & he will pay ( I Hope) so thats what i will do today,I will post problem on here when i know what it is. Cheers Mel.

29th November 2008, 12:03	#7
Jules This is my second home ZT 260 SE Twilight and 10 other 75 ZT's :O Join Date: Jan 2007 Location: Conwy NORTH WALES Posts: 11,094 Thanks: 512 Thanked 1,116 Times in 763 Posts	All CDTi owners & Petrol for that matter should check their antifreeze is RED as was supplied from the factory. Spec is OAT Long Life Don't use the cheaper Blue or Green Antifreezes. :lol: __________________ [SIGPIC][/SIGPIC] Newbies do now!! 1. Plenum drains..all 3 or 4 year dependent 2. Cooling fan..All speeds functioning 3. Bonnet cable divider block

28th November 2008, 21:26	#2
T-Cut This is my second home Rover75 and Mreg Corsa. Join Date: Nov 2006 Location: Sumweer onat mote o'dust (Sagin) Posts: 21,753 Thanks: 341 Thanked 3,660 Times in 2,924 Posts	Has this oil appeared recently? How much is 'loads'? What does it look like (a dark brown layer/globules, a light golden 'mousse', yellow froth, ??). Was it apparent last time you checked the coolant level? When was that? Who could this 'someone' be? TC

29th November 2008, 10:30	#6
cjmillsnun Gets stuck in Rover 75 Connoisseur CDTi & MGZT+ CDTi 135 Join Date: Oct 2007 Location: Petersfield Posts: 787 Thanks: 0 Thanked 2 Times in 2 Posts	Sounds like you found a good dealer to buy the car from. Suggest to the local repairer (try and find a BMW specialist or a Rover Specialist) that it is the engine oil cooler so that they look at it first. I've certainly heard of it happening on a couple of M74R engines.

29th November 2008, 16:01	#10
sf8752 Gets stuck in rover75 conny 1.8 white gold Join Date: May 2007 Location: liverpool Posts: 509 Thanks: 0 Thanked 0 Times in 0 Posts	is ther a part number for the oat from vauxhall and how much is it steve..