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Wow surprise continued problems from the 996 Carrera, everything that can happen has happened to me! I recall a post about mayonnaise or some white discharge in the oil filling tube but an having trouble finding it (oil separator issue?) anyway, got off work last night - pretty cold around 40 degrees F and got the check engine light after starting up.... Nothing sounded abhorrent except for a little loss in power but it came back feeling fine.... Go to autozone and their reader won't work about to go to auto parts plus now just to see what the code is but as I was driving 7 miles home on the freeway notice a substantial amount of smoke coming from the back. Realize after stopping that oil has leaked all over the back right side of the engine :( oil level is just slightly low (two bars lower than the max) so I'm looking for the leak (head gasket? Coolant separator?) open the oil input cover and see the white goo.... What's my next move? Jeff in PA if you're not too busy0258fc8a2bd2471a43aa92aa9ddb3866.jpg

Droplets after I park


More drops and oil all over underneath


Nice juicy mayonnaise or white discharge in he oil filler




Can someone shed a little light

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Ok just got to auto parts plus- reading is for miscellaneous misfire cylinders 1, 2 and 3 are misfiring so maybe it was gasoline dropping all over and burning off not oil. I guess the sludge is just from being cold and the coolant level seems fine as does the oil level. After starting up engine lost power again rpm dropped super low and it was clearly struggling.

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You've clearly got a problem and, of course, gasoline does not form droplets on a hot engine, as I'm sure you're aware.


"sludge is just from being cold ...."

If it were my car, I wouldn't start the engine again until I knew what had happened.

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On the back right side of the engine are the oil pressure sender unit and the oil heater/cooler sitting on top of the engine.  Possibly one of those two are leaking oil.  Head gaskets rarely if never fail on the 996 engine.  If the oil seems to be all underneath the engine, check and make sure the oil filter is tight.  The mayo in the oil filler tube is normal for a car driven in cold weather and not warmed up enough.


I don't know why you would get codes for #1,2,3 cylinders that are on the left bank, unless you are having two different problems at one time.  How old are the plugs/coils?

Edited by DBJoe996
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  • 2 years later...


Showing the p0420 code for catalytic converter bank 1, just had an o2 sensor replaced (320+labor) and a new alternator installed (600+ labor) ouch! Was the alternator necessary to change? Doubtful but now I’m trying to save a couple bucks - what does everything think about this brand/product? Any opinions?

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