As you know I did the article on the introduction to the Oliver Fleetline Diesels. Due to a couple of vendors not getting back with me in time I am looking for some information for part 3. I am looking for the oldest diesl in each of the three models. I would  also like some pro and con facts as if you would like to see some troubleshooting tips for all the diferent injection systems used by Oliver including the crawlers and the imports.