Does anyone have access to a manual that can tell me the proper amount by weight of refrigerant that goes in an 01? Is the oil PAG or PEG, I forget. I have to recharge my system, twice now some form of high pressure relief valve (I think) has blown off and allowed a large amount of refrigerant to escape. Appears to be on the back side of the compressor. Both times it happened with the high idle on, AC on max, soon after starting. The first time I recharged by pressures but this time I would like to pull a vacuum and recharge by weight. There was some loss of oil, but I have no idea how much. I assume a 2 ounce can of oil should do it.