Hi driving along and the oil pressure light came on i pulled up oil was low checked the water to find the oil was in the header tank, checked the oil/water cooler o.k any help would be gratefull the car still drives and runs lovely not that i`m driving it at the mo.

sean jones, February 2009

same probleme Igot opel 1.7DTI isuzu black dirt like oil in hedder tank no overheating and changed oil cooler still have the probleme thank you alla for this valuable information I think I have to reoplce the sleeves but how can you remove theme without removing cylinder head?

firecats, October 2012

Bought a Astra diesel 1.7 dti 2000 model a few months ago went to top the water up and found oil in with the water some people said the Headgasket, some said the oil cooler, some said the injector seals. I have had the oil cooler tested put about 50 psi through it and the garage said it's ok. Anybody got any idea if it could be the head gasket or the injector seals because there's no water in the oil

nik, April 2011

Hi thanx for all ur help got it sorted now it was the `o` rings that are on the sleeve that the diesel injectors push into a common fault apparentley with the 1.7 DTI isuzu 16valve, with the right tools you don`t have to take the head off but the cam`s have to come out, £58.00 just for `o` ring`s genuine parts only. just one `o` ring seperat`s the oil pressure side to the cam`s from the water jacket in the head. Hope this might help anyone reading this thanx again, :-)

sean jones, February 2009

please ignore cledlyn answer,hes not well.k is correct

mutley, February 2009

could be oil cooler ,needs checking first!

k, February 2009

thanx i`ll get it tested but i toped the oil up and it hasnt used any since in about 100miles and still runs fine not overheating, someone said it could be the seal`s on where the diesel injectors go into the cylinder head?

sean, February 2009

Get the cylinder head gasket replaced ASAP before the reverse starts to happen i.e. water going into your oil. It is not a good idea to be driving it at all- if you loose oil pressure altogether the engine will terminally seize up within 15secs @ 30mph

cledlyn, February 2009