Marvell Biodegradable SYN Hyd Fluid ISO 68 has a very high viscosity index making these very stable products in high temperature use.Marvell Biodegradable SYN Hyd Fluid ISO 68 can be used in environmentally sensitive areas to replace mineral oils in Environmentally Sensitive Areas as:Logging machinery in forest areasWharf and marine hydraulicsFruit and crop harvesting machineryGolf course machinery & ride-on mowersForkliftsQuarrying & mining industryWine industrySki-lifts & amusement ride machinery.Marvell Biodegradable SYN Hyd Fluid ISO 68 is also a food grade lubricant meeting USDA H2 approvals for use in food manufacturing establishments and food packaging industries where incidental contact with food product or packaging is possible.