Hi, My brother in-law wants me to take my trailer and go up North with him on 05-24-08 so he can look at, and probably purchase a Case 1845C that is the same year of manufacture as mine (1992). This unit has about 6800 hours on it, and has not been run in just over a year. I guess he can get a really good buy on it, but the present owner told him the battery is dead. Besides the battery being dead, I am thinking there may be some fuel issues that we should be prepared to deal with. The owner stated that it has about 1/2 tank of diesel in it that was treated with some power service additive before he parked it. Before he buys it my brother in-law wants to get it running to see what problems it may or may not have. The owner is elderly and will not be going to the storage site with us, he will just give us the key and is ok with us doing whatever is needed to get it up and running. Beside a good battery, can someone tell me what all we might have to do to prepare this thing for start up. Do we need to change the fuel filter, drain the fuel, change the oil, coolant???. I can not find anything in my owners manual covering a unit that has not been run for an extended period. Any ideas or suggestions would be greatly appreciated.....................thanks, Pat.