Cdrider, For long term truck storage,some popular suggestions, fresh oil,oil filter, chassis lube,disconnect/remove batteries, keep batteries in a warm place OFF the ground. Next would be jack up truck, support on stands or similar to take weight off springs. I would also cover the truck and wheels/tires with a truck cover. Also try to close all openings(firewall, floorpan etc. ) to keep out rodents. ,etc. I would also seal the exhaust pipe with duct tape or similar, etc. to keep moisture out of exhaust. Hope this helps. Rick