Engine mixing oil and water


Asked by Ongama Apr 26, 2018 at 05:48 AM about the 2010 Opel Corsa D

Question type: Maintenance & Repair

I suspect my corsa bakkie is mixing oil and water because when i opened the
oil cap it had a greyish colour but when checking the dipstick the oil is black,
what could be the problem?

4 Answers


you shouldn't let the oil get black but it doesn't matter you probably have a blown head gasket if there's white emulsion under the oil fill cap ,probably over heating too , , what does the exhaust look like ?

2 people found this helpful.

A bad PCV can also cause emulsified oil. Pop the PCV hose off and look at the hose and valve's condition, if it's fouled clean or replace those.


If the oil is good and free of water / oil emulsion and the grey goop is only on the inside of the filler cap then I would not worry about it. Also this being a diesel, the black colored oil is perfectly normal.


My opel kadett 1.4 , has mix oil nd water , what is the cause... because I was stop, just because of rain. Nd when rain stop , I start engene.. but not starting... I towed it to home... i found dat oil nd water has mixed when I open oil led Eugene. Actually what cause of it, and how can i fix it?

1 people found this helpful.

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