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[tunnie]

Next door from my parents have an Astra H 1.7 CDTi, its loosing coolant, on a drive to Banbury and back looses maybe half a cup? About a finger or two's worth from the tank, they have had it at a "specialist" which had it all day, they said they could find no coolant leak so saying its head gasket!

Its got 170k miles so fair few under it, I could not see a HBV or anything similar, only the big coolant pipe from the rad into the block, appeared to be weaping:



That be the course, not sure what these 1.7 CDTi engines are like 

[Marks DTM Calib]

Any sign of oil in water or water in oil

[andyc]

Yeah it could be the oil cooler that gone, done three last week at our workshop.

[tunnie]

Balls forgot to check coolant, from external view it looked clear, but did not inspect it. Will check 

[tunnie]

So an update on this, coolant clear and not water in the oil.

Still looses a little bit of coolant, on a short runs 

[Omegatoy]

try changing the coolant tank cap!!they  do get tired and its a cheap option,report back when done!1

[Marks DTM Calib]

There are also a couple of small coolant pipes near the egr cooler which can split

[tunnie]

Thanks chaps