I have two 3rd generation 4-runners. A '97 that just turned 267,200 miles. Never need to add any oil! A 2001 that has almost 180,000 miles. Also never need to add oil!
Go here to find out everything you need to know about models:
http://www.toyota-4runner.org/toyota-4runner-forum/It is an awesome site full of technical info and folks willing to help you out.