Originally Posted by klspahr
Maybe Duckogram could elaborate on the viewpoint of "Lack of use can be as bad as abuse."
No problem elaborating however the following list is conditional and not all inclusive. The reason being variables such as, but not limited to, how, when and where the coach was used. How, when and where it was stored. How the Coach was maintained.
Rubber - Tires, belts, seals, gaskets and hoses. Why? Because they deteriorate. Ten (5+) year old tires, belts and hoses can and should be replaced. That can be done for about three thousand dollars, or less if you can do it yourself. The real problem lies with internal seals and gaskets that are expensive and/or labor intensive to replace. Why? When a seal/gasket dries out the possibility of hardening or cracking increases. Additionally, the machined surface they contact can be subject to corrosion. That combination can cause premature wear and subsequent early failure of the part. So instead of a part with a normal useful life of 100k - 150k mi, it now may only last half of that. These are things that you cannot spray with protectant to maintain them.
Braking System - Corrosion is the problem here. That includes pistons and linings in the calipers and cylinders. Got ABS? You might have problems with that too. Lets not forget that cable actuated emergency brake.
General Corossion - Internal parts such as control cables, fan motors, compressors, valves, pistons, bearings, bearing races, gears, bands and switches. They all become more susceptible to exposure to the elements when not exercised on a regular basis.
The Generator - Rather than stating the obvious, I will simply ask; What are the chances this expensive piece of equipment was maintained properly?
Lubricants and Coolants - Oils, Brake Fluids and Anti-Freeze collect contaminants. Over time, the acidic buildup can eat away at the systems they were designed to be use in. The big question here; Is there documentation showing that these fluids were changed in accordance with the manufacturers guidelines?
So the bottom line is you may be taking a big chance. As long as you know that and pre purchase consideration is given to the uncertainty of it all, you would probably be OK.
I do not think I need to elaborate on what the effects of abuse are.
I hope this helps the OP with the choice.
Note: In 2010 I bought a 2003 Jayco from an estate. The unit had not been used since 2005. The above reflects some of my experiences.