A valve cover is pretty much what it sounds like: A metal cover that sits inside the engine that covers the gasket and keeps the oil inside. That is a good thing. The valve cover is sealed with a cork or rubber seal that keeps any oil from leaking out.
The sooner you detect issues with the steering or bouncing and have the possible concerns checked out, the less repair damage that could be happening to your car. Another side effect of worn wheel bearings is it can affect the tire wear on your vehicle. That can be expensive to replace.
When the Cabin Air Filter is clean, it helps keep the Air Conditioner and Heater system operating efficiently.
The Oil Change Service is the absolute bare minimum service you need to provide your vehicle.
Your transmission is a vital part of your vehicle's drive-line and should be serviced regularly!