Based on the search results, Y S ENGINEERING SOLUTION provides transformer oil filtration services in Faridabad and Gurugram, India. Transformer oil filtration is a crucial maintenance process that purifies the insulating oil within a transformer. Over time, this oil can become contaminated with moisture, dissolved gases, and solid particles, which diminishes its dielectric strength and cooling efficiency. The filtration process, which often utilizes a vacuum purification machine, heats the oil to remove water and gases while physical filters remove solid impurities. This procedure restores the oil's insulating properties, extending the transformer's lifespan and preventing potential breakdowns and insulation degradation.