How can I tell if my 2000 mercury sable3.0L has ohc or doch cam?

To determine if your 2000 Mercury Sable with a 3.0L engine has an overhead cam (OHC) or double overhead cam (DOHC), you can check the engine specifications in the owner's manual or look up the engine code online. Additionally, you can visually inspect the engine: a DOHC engine typically has two camshafts per cylinder bank, while an OHC engine has one. You can also look for labels or markings on the engine itself that may indicate the type of camshaft configuration.