My '96 is currently at about 97,000 miles. By the time my next oil change is due, it will be at about 100000. When I bought the truck in Feb., I did a complete tune-up: spark plugs, wires, fuel filter, rotor, and cap. My oil changes have been pretty consistent every 3000 miles. Is there anything I should check when I hit the milestone? The air filter is a K&N, it was there when I bought it, and I was thinking I should clean the filter. Can you guys let me know of anything else I should upgrade/check/replace? Thanks.