What are the hidden dangers of replacing the valve cover with aluminum alloy?

[LaDaniella]

The replacement of the valve cover with aluminum alloy poses no safety hazards. Below are relevant details about the valve cover: Function: The primary role of the valve cover is to protect the engine camshaft while forming a nearly enclosed cavity together with the cylinder head. Inside, there are oil return and supply passages connected to the cavity. The valve cover effectively prevents dust from contaminating the engine oil or entering to accelerate wear on valve train components. Therefore, it is necessary to regularly inspect the sealing condition of the valve cover. If oil leakage is detected, timely action should be taken to ensure the engine's durability. Sealant Application: If oil leakage issues are resolved after replacing the gasket, applying sealant is entirely unnecessary. However, if leakage persists post-gasket replacement, applying sealant can enhance the sealing of the valve cover. If necessary, the valve cover itself can also be replaced. Note that applying sealant may complicate future valve cover replacements, as the sealant must first be removed, potentially increasing repair costs.