I know that leap years are counted every four years for instance, the last one is 2008, now 2012 is exactly four year later. I guess it relates to theplanet's revoution, probably, it takes 24 extra...
4X4's must be titled, right? Your title or registration should tell you the model year. If not, there should be a VIN or serial number somewhere on the vehicle. With that in hand, go to the Polaris...