Complete inspection and replacement of most engine oil and coolant gaskets to insure there is no leaking of fluids. The leak test methods could include visual testing, uv dye testing, and smoke testing.
Importance of Service:
Fluids are designed to stay enclosed in the engine and leaks can cause a drop in the fluid level. Low fluid levels can affect the engine oils ability to control friction, and low coolant levels can cause overheating.
What May Happen if The Service is Not Performed:
If your engine gaskets are leaking it could cause a burning smell, low oil pressure, overheating, engine seize or lock up, smoke from the engine compartment, and/or leaks on your driveway.