Oil drains in a cylinder head serve to facilitate the efficient removal of excess engine oil that accumulates during operation. This helps maintain optimal oil levels in critical areas, preventing oil from pooling and potentially causing issues like hydraulic lifter failure or increased friction. By directing excess oil back to the oil pan, these drains ensure proper lubrication of the engine components and contribute to overall engine performance and longevity.
gasket, head
Oil in the expansion tank indicates a leak between the internal oil channels and water channels within the cylinder head. This is usually attributed to a failed cylinder head gasket, cracked cylinder head or cracked oil cooler (where fitted).
If its coming from under the chrome cylinder head cover, its the head cover gasket.
You bet it would. That's the most common reason for oil/coolant mixing. ======================================================= A bad head gasket or a warped cylinder head would be more common than a cracked cylinder head
A Cracked cylinder head, or engine block. Or a blown cylinder head gasket.
Need more background info. Cracked, or warped head. Gasket installed incorrectly.
blown head gasket,cylinder head not torqued to specs. cracked/warped cylinder head.those are some causes.
Your cylinder head gasket needs replacing.
blown head gasket, cracked cylinder head, crack in the cylinder block
A head gasket joins that cylinder head with the cylinder block. It separated the oil and the coolant passages. If the two mix, the head gasket will "blow" soon.
Water in the oil is a telltale sign of leaking cylinder head gasket.
The cylinder head will cover the the puched out hole for the piston and the coolant holes molded in the block and the oil passages.