6 SİLİNDİR biogazlı Valtra.. bu seferde gübre fiyatları ÇOK artar ama 
http://www.wnif.co.uk/articles/876/1/Valtra-T133-biogas-tractor-has-six-cylinder-SCR-engine/Page1.html
http://www.wnif.co.uk/articles/876/1/Valtra-T133-biogas-tractor-has-six-cylinder-SCR-engine/Page1.html