Mayonnaise under the oil filler cap...
The blokes on Deals on Wheels would say it was a sure sign of a blown head gasket.
I am hoping it is something far easier to fix. I noticed the water temp rise above normal while driving my B20 Amazon. It does not seem to have lost any water but there is the tell-tale mayo under the oil filler cap and a drop in power. Has anyone had this happen and found it not to be the head gasket? jools |
RE: Mayonnaise under the oil filler cap...
I had this mildly in an old engine on my 122. I believe that it was due to blow-by on the rings pushing exhaust gases (including water vapour) into the crankcase which then emulsified with the oil to produce mayo. I know that it had some crankcase compression because of the quantity of oil that was blown out of the vent pipe.
Eventually, I replaced the engine and have not had any repeat. |
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