MBI Global GT8 drill with Smart Reservoir VVR1300 

GTechDrill Model GT8 using a 21 liters sealed variable volume reservoir (VVR) on the hydraulic system. The VVR1300 model replaces a 460 liters conventional reservoir. The weight saving is approx. 600kg. The VVR small volume promotes for the use a biodegradable fluid at much lower filling cost. The VVR is sealed thus eliminates solid contamination and moisture ingestion consequently increasing oil quality over time.