Purchased a 2000 TJ with 81,000 miles on it just a few months ago. Jeep was mostly towed behind an RV and used to get around town when needed. I've replaced the brake system with new, changed oil, plugs, rotor, cap and belt. Jeep seems to run like a champ. I'm new at this jeep stuff and learning all I can from you guys that know all about jeeps. My question is, are there things I should be replacing even though it only has 81,000 miles but it is 21 years old?