oilhammer
Certified Volkswagen Nut & Vendor
Yeah, lower than ideal operating temps and short trips can cause that.
Remember, water is one of the biggest results from burning gasoline. Chemistry:
Hydrocarbon (HC, or Hydrogen and Carbon) combined with air (Oxygen, Nitrogen, a little Carbon Dioxide) produces Carbon Monoxide, Carbon Dioxide, Nitrogen Oxides, and lots and lots of H2O (water).
If the engine oil gets over the boiling point of water at 212F, then the water vapor will be more easily carried out the breather system into the air intake tract of the engine. Despite a popular belief, HOT oil is GOOD for the engine. Certainly do not want it too hot, but above 212F is best.
FWIW, that particular engine has that issue with moisture buildup on the oil cap pretty often. I'd not lose much sleep over it, just make sure the scan data shows the coolant getting up to temp and it should be fine.
Remember, water is one of the biggest results from burning gasoline. Chemistry:
Hydrocarbon (HC, or Hydrogen and Carbon) combined with air (Oxygen, Nitrogen, a little Carbon Dioxide) produces Carbon Monoxide, Carbon Dioxide, Nitrogen Oxides, and lots and lots of H2O (water).
If the engine oil gets over the boiling point of water at 212F, then the water vapor will be more easily carried out the breather system into the air intake tract of the engine. Despite a popular belief, HOT oil is GOOD for the engine. Certainly do not want it too hot, but above 212F is best.
FWIW, that particular engine has that issue with moisture buildup on the oil cap pretty often. I'd not lose much sleep over it, just make sure the scan data shows the coolant getting up to temp and it should be fine.