To reveal fully the monetary and management benefits of MaintenanceGuy, Dingo Maintenance System's signature condition-monitoring service, the company is offering a free oil analysis evaluation on a first-trial basis. Here's how the new program works: A maintenance supervisor logs on to dingo's website, clicks on a link offering the free oil sample analysis, and completes a simple registration form. Dingo then mails an oil analysis sample kit and sets up a unique, web-based MaintenanceGuy software account.