Hello with my 626GE 2,5V6 (1992) 2 spark plugs were under oil. But does not cause any problems otherwise. The workshop thinks the cylinder head seal is down, costs from 1900Euro upwards and must be changed immediately. However, I did not see any water in the oil or vice versa., also no blue haze in the exhaust gas. Oil consumption since the last oil change 9000tkm from the max stroke on the oil measuring rod to about a third to the min stroke. So probably wearyer than half a liter. But when the spark plugs were checked, I noticed that the spark plugs were installed very loosely in the workshop at the last change. So my question: can it be the one not sufficiently attracted spark plug lead to the oil rises and collects itself? Did the spark plugs now all follow up and observe whether new oil occurs. Is the workshop right or does they just want to do a business?