Pioneers in aviation fuelling in india, bharat petroleum has come a long way. They supply aviation fuel from their 19 aviation fuelling stations strategically located across the country. Bharat petroleum provide the best aviation lubricants apart from being the exclusive and the only authorised distributor of aeroshell lubricants, in india. Aeroshell hydraulic fluids is an aviation lubricant offered by bharat petroleum. Mil-h-5606 hydraulic fluid, a mineral oil-based fluid has an excellent operational properties over the temperature range of 65°f to 275°f.Flammability,a major deficiency in this fluid was overcome by developing hydraulic fluids based on phosphate ester.More recently mil-prf-87257a was introduced to overcome its low viscosity problem.
The different types of aeroshell hydraulic fluids are 41, 71, 31, 51, 61 ,aeroshell shock strut fluid [ssf] and aeroshell landing gear fluid [lgf].The non-aviation types include aeroshell 4,31and 41.
The main features of hydraulic fluids are: