Evaluation of the Impact of Tractor Field Works on Changes in Selected Elements of Engine Oils. Agricultural Engineering , [S. l.], v. 26, p. 1–12, 2022. DOI: 10.2478/agriceng-2022-0001. Disponível em: https://ojs.agriceng.org/index.php/AgricEng/article/view/288.. Acesso em: 8 jan. 2025.