Question about 1994 Jaguar XJ6
My 4L sovereign has white goo in oil filler cap, but seems fine in every other way. Is this always a sign of head gasket trouble or could it be something innocent?
Unfortunately, the symptoms you describe as known as "gelling" in which the antifreeze seeps into the crankcase, indicating that your head gasket is indeed need of replacement.
I strongly suggest you refrain from driving your car and take it to get fixed. Reason being is because continuing to drive it can likely result in warpage of the head (which sits about the block).
Hope this helps.
Posted on May 18, 2008
The AJ6 engine also does this when the oil is overfilled.
Posted on Dec 13, 2008
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Posted on Jan 02, 2017
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