A thorough service history dramatically elevates the desirability of any second hand tractor. Documented oil intervals, coolant flushes, filter changes, and major component repairs prove diligent ownership. When owners preserve receipts and scheduled maintenance logs, buyers can invest confidently, knowing internal components received adequate lubrication and protection against premat... https://www.bizbangboom.com/articles/how-to-extend-the-life-of-your-tractors-diesel-engine-25081