I have two cars that are seldom driven and the gas in them is well over five years old. That hasn't been a problem so far, but in some areas of the country gas will go stale in as little as a month. If your engine runs poorly, run as much gas out as you can stand, then add fresh gas.
Brakes wear out from use, not from sitting. What WILL happen is rust will build up on the rotors from the humidity in the air. That will cause a grinding sound and possibly easy wheel lock-up, especially on unpaved roads. That will go away after a few brake applications.
Don't get excited if some things don't work after replacing the battery. Fuses often blow from the current surge when computers charge up when the battery is reconnected. Look for any blown fuses under the hood and inside the vehicle.
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Monday, June 29th, 2015 AT 10:31 PM