When you think about maintaining your excavator, you probably picture greasing pins, checking hydraulic hoses, or replacing filters. But here’s a truth that separates the smart operators from the expensive repair stories — oil testing  is one of the most powerful, yet most overlooked tools in extending the life of your machine. In South Africa’s tough working environments — from the red dust of the Northern Cape to the coastal humidity of Durban — your excavator’s oil isn’t j
