Xtype jaguar 2.0l diesel - Overheated and oil mixed with water

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Sun 22 Apr 2018 00:06
Xtype jaguar 2.0l diesel - Overheated and oil mixed with water - Alfred Rhodes

My xtype jaguar 2.0l diesel overheated and the oil mixed with the water in the expansion tank. Why could this be?

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Sun 22 Apr 2018 04:20
Xtype jaguar 2.0l diesel - Overheated and oil mixed with water - edlithgow

I'm afraid thats the classic sign of head gasket failure. There's a breach between the cooling system and the lubrication system.

The only other causes I'm aware of are worse, such as a crack in the head or block. This tends to happen at the exhaust ports because they are the hottest part of the head.

I believe BMW;s do it a lot, but it can happen with any water cooled engine.

Air-cooled engines have a lot going for them.

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Sun 22 Apr 2018 08:21
Xtype jaguar 2.0l diesel - Overheated and oil mixed with water - S40 Man

Air-cooled engines have a lot going for them...

Surely that can't be true. No main stream car maker still uses uses air cooled engines these days. Even Porsche have given up on it.

It does sound like possible head gasket. I can't imagine an x type is with a lot? See how much repair might be but consider a bodge with head gasket repair good eg

www.halfords.com/workshop-tools/garage-equipment/h...r

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Sun 22 Apr 2018 10:21
Xtype jaguar 2.0l diesel - Overheated and oil mixed with water - elekie&a/c doctor

Could well be a head gasket problem.Possibly not an economic repair on one of these.However ,I would take a closer look at the cooling system as this could be a faulty oil/coolant heat exchanger blown.

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Sun 22 Apr 2018 16:01
Xtype jaguar 2.0l diesel - Overheated and oil mixed with water - Peter D

Go to a decent garage and get them to check the header tank for combustion gases. If there detector fing the gases then you have a HG problem. Regards Peter

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Tue 24 Apr 2018 18:43
Xtype jaguar 2.0l diesel - Overheated and oil mixed with water - edlithgow

Air-cooled engines have a lot going for them...

Surely that can't be true. No main stream car maker still uses uses air cooled engines these days.

I didn't mean air cooled engines had a lot going for them for main stream car makers these days. I'm not a main stream car maker, so that isn't my perspective.

I meant air cooled engines had a lot going for them for owners, especially owners of fairly old cars.

Like this one.

Y'know, the one in the OP, with the liquid coolant in its oil.

Somewhere I've seen stats of the leading cause of death for oldish cars, and IIRC it was cooling system failure..

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Sun 22 Apr 2018 18:21
Xtype jaguar 2.0l diesel - Overheated and oil mixed with water - Andrew-T

Question may be whether the engine overheated because of HG failure, or the other way round ? If the latter, why did it overheat?

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Tue 24 Apr 2018 18:47
Xtype jaguar 2.0l diesel - Overheated and oil mixed with water - edlithgow

Question may be whether the engine overheated because of HG failure, or the other way round ? If the latter, why did it overheat?

Chicken and egg. Impossible to establish now and no longer matters anyway.

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Wed 25 Apr 2018 11:07
Xtype jaguar 2.0l diesel - Overheated and oil mixed with water - Peter.N.

Head gasket failure won't of itself cause overheating but the pressure build up in the cooling can blow the coolant out - that's what causes the overheating.

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Wed 25 Apr 2018 13:54
Xtype jaguar 2.0l diesel - Overheated and oil mixed with water - Andrew-T

Head gasket failure won't of itself cause overheating but the pressure build up in the cooling can blow the coolant out - that's what causes the overheating.

I was just wondering whether coolant might have been lost due to another cause, without any warning on the dash ?

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