Re: TrevorK's 1955 Packard Patrician

Posted by HH56 On 2019/12/15 10:42:17

I am confused by what you are describing as the breather. Do you mean the 90 degree road draft tube which goes down the rear and side of the engine and connects to the top cover of the lifter chamber just behind the intake manifold? If so, and you are losing oil out of that opening I would think something else is the issue.

The breather tube just provides an air exit for engine ventilation and crankcase blowby. Air enters the oil filler cap and circulates thru the crankcase and lifter chamber. Due to the shape and position of the opening on the draft tube, movement of the car creates kind of a vacuum at the opening to draw that air out the bottom of the tube. Other than maybe a few small bounced off droplets from other components in the valve chamber oil should not be able to reach that opening and surely not enough to be running out.