OIL
15

Asked by smilee Jul 19, 2016 at 08:33 AM about the 1973 Volkswagen Beetle Hatchback

Question type: Maintenance & Repair

Hello i have a 1973 beetle when i drive more than an hour at about 80km/h the oil pushes up on my dipstick and start to leak at the overflow is that normal?

2 Answers
103,215

KenF answered 8 years ago

No it is not. It is a symptom of too much pressure in the crank case. That may have several causes - bad piston rings, allowing blow by from the combustion chamber to over-pressurize the crank case and force oil out. It may be TOO MUCH oil was put into the engine. A good sign of that is frothy oil. I'm not that familiar with VW engines, but it should have some sort of PCV or positive crankcase ventilation, if that is plugged up the pressure in the crank case will find another path to exit, like a dipstick tube. (this would be the easiest one to look into and fix.)

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