I'm not terribly too sure about the Mahindra, but I have recently had to check my hydraulic fluid and I consulted with the manual. Do you have a manual for your vehicle? If you don't, then I would get a repair kit which should have some instructions that could help you out with your situation. https://www.hydrapakseals.com/storefrontCommerce/hydraulicRepair.do
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I'm not terribly too sure about the Mahindra, but I have recently had to check my hydraulic fluid and I consulted with the manual. Do you have a manual for your vehicle? If you don't, then I would get a repair kit which should have some instructions that could help you out with your situation. https://www.hydrapakseals.com/storefrontCommerce/hydraulicRepair.do