Normal pressures depend on engine rpm, whether the fan clutch/electric condenser fans are operating properly. If it's 36F out the vents, don't do anything !!! The pressures were measured at idle and the fans seem to be working properly. Yeah, 36 degrees Fahrenheit; I'm pretty happy about that. I me...

The car is a 2009 BMW 328i. These are the numbers after it was recharged: Outside air temperature: 79 degrees Vent temperature: 36 degrees Low side pressure: 29 psi High side pressure: 157 psi Obviously, 36 degrees out of the vents is pretty awesome. How are the low and high side pressures? What wou...

Thanks for the reply - I appreciate it!

Sorry if this question has been asked a thousand times before.

When pulling a vacuum, how much oil (if any) is normally lost/sucked out of the system?