Also If you look under your hood for the green tag, I believe the X5's only take 0.98 lbs to begin with, so adding a pound would essentially double the amount in your system... not good. Once you get the gauges hooked up, the low side should be somewhere between 25 - 35 psi, and the high side somewhere between 200 - 300 psi, varies with environmental conditions as you know. Also, for example, if your aux fan stops working, the high side pressure can shoot up to 450 psi with a quickness. Its amazing what effect it has on the head pressure....

If the pressures are off, like the low side is 45 psi or higher, etc. Then there is likely a problem with an ac component and would need repairs. If its low, even just a hair low, then it probably has a leak somewhere. I'd bring it somewhere with an "automatic" ac machine. It essentially is set to recover, vacuum (which removes any moisture from the system) and fill to the proper charge level. No over or under filling with this setup, which is highly recommended with a vehicle so temperamental to its charge level as one that takes just a smidge under a pound... even an experienced indy with his gauges and a can hanging off of them can't properly judge the correct amount on these

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X5 pics

RIP 4.6is.....

2003 4.6is