Last post on Dec 21, 2011 at 7:08 PM
You are in the Subaru Legacy & Outback
What is this discussion about?
Subaru Legacy, Oil
#2 of 3 Re: Using (but not burning) oil [bowsmoke]
Feb 19, 2011 (1:17 am)
In all modern engines (say after early 1970's) , the crankcase is vented back to the throttle body so that oil filled air can vent into the inlet chamber to the engine, burning off any oil mist without venting to atmosphere. This is only supposed to happen under high pressures in the crankcase. There is a valve in the breather tube (PCV valve - Positive Crankcase Ventilation valve) which can stick, meaning that this venting is continuous and result in an oil mist being continually carried into the throttle, especially under high vacuum (ie off load deceleration).
Looking at the PCV valve and integrity of the hoses connecting crankcase and throttle body would be a good start point.
#3 of 3 Re: Using (but not burning) oil [bowsmoke]
Dec 21, 2011 (7:08 pm)
What was the cause of the stinky oil leak? I have the same problem, in the same car.