Oiling System

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.

The LF4 engine contains a unique engine oil cooler and filter adapter for the specific needs of the turbocharged engine. The oiling system components also differ depending on the engine being in a transverse or longitudinal orientation. The LF4 has unique oil pans depending on orientation, with the pans being separated into an upper (traditional aluminum) and lower (stamped steel) pan (XTS only). This configuration helps with noise and mass concerns. It also affords some serviceability improvements through not needing to remove the entire upper pan for some service procedures; the procedures can be performed through removing the lower pan. The LF4 oil pans contain oil level switches as do nearly all HFV6 applications. The oil level switch is normally open and closes at oil levels above minimum requirements. The oil pressure switch is mounted on the oil filter adapter.