Valtra
Unfortunately Trac 21 has decided to use an inferior oil that that needs to be changed every 250 hours after many years of success with American Petroleum. The advantages demonstrated with American Petroleum products in the course of the last 14 years prove that these products with their advanced formulations and specs reduce wear.

Many of the Valtra tractors in Bolivia are operating 400 to 700 hours between oil changes and lave passed the 22,000 hour mark without overhauls.