You should have you car looked at least once a year for an inspection. If you notice any problems or hear anything unusual, bring your car to the mechanic right away.
Either your clutch is stuck or your synchro mesh and or bushings have gone out. you need to have your tranny serviced
Get your car serviced and your mechanic will reset it.
Your fuel tanks are built to last the lifetime of your vehicle. They should only need to be serviced if they are damaged in an accident, or if some contaminant has been added to the tank.
It has a chain. They stopped putting belts on them in 94. The chain should never have to be serviced.
Typically most alarms and alarm services are tested at least once or twice a year to make sure that they are working properly or need to be serviced. However, if it is a high-security system such as for a bank, it may get tested daily or weekly.
No
You need to change the filter with every oil change. Nissan recommends every 3750 miles.
Toyota's need to be serviced often.. otherwise they tend to turn their engine oil into sludge. this may be your problem.
In most areas auto services can be received from any traditional auto mechanic. Where you get your car serviced is up to you but a great place to start is with the dealership of your car. Usually you will need money and appointment in order to have your car serviced.
Take it to a shop and get the engine serviced. Kinda makes sense if you think about it.
120,000 miles is pushing it i am told
once a week is recommended