What is the torque when replacing valve cover gasket on a 1994 Nissan Altima and does require lubricant?

The torque specification for the valve cover bolts on a 1994 Nissan Altima's 2.4L engine is typically 10 Nm (90 in-lb). However, always verify this with your specific repair manual as slight variations can exist depending on the exact engine and bolt size.

Regarding lubricant, a thin film of high-temperature silicone sealant is generally recommended on the valve cover gasket before installation. This helps create a better seal and prevent leaks. Do not use excessive sealant. A bead approximately the thickness of a thin line of caulk is sufficient. Applying too much can squeeze out into the engine and cause problems. Many people skip the sealant entirely, but using it provides a better seal, especially on older engines. There is usually no need to lubricate the bolts themselves.