A year and a half is not too long. I would just make sure it has a full tank of fresh fuel, new anti freeze, put it up on jackstands if you have bias ply's, and disconnect the battery. Today's fuel is good for a long time, so no worries there, just don't want room for condensation in the tank. I just revived an 85 toyota that had been sitting for 5 years. Fuel is still good, but it had about half a tank and the inside of the tank is rusting bad. Have had to clean out fuel filters several times. By the way, if you are out in the middle of nowhere, you can fill your mouth with water, and then blow it into the carb side of the filter. Do this about 10 mouthfuls, then blow a few breaths of air through it to get most of the water out. Voila, new filter ready to go...