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Do I have to add (non conducive) oil when replacing the refrigerant?

Discussion in 'Gen 2 Prius Main Forum' started by AndreyD0228, Aug 7, 2024 at 10:41 PM.

  1. AndreyD0228

    AndreyD0228 New Member

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    I have a friend of a friend who works on AC systems and would be able to pull out all the refrigerant from the system and refill with the proper amount.

    I know it needs to be R134A refrigerant with NO oil. Maybe I'm not understanding correctly, but would it be okay to refill with just the refrigerant? Or does some amount of nonconductive oil be added to function?
     
  2. Tombukt2

    Tombukt2 Senior Member

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    It depends if your original compressor condenser evaporator and all of that are in the car it's real hard for that oil to get out with a leak let's say If Freon leaks out you see the oil streak along the hose that's just a little bit of oil vapor mixed with the freon as it comes wafting out of the little hole under pressure The pressure is gone in seconds there's not enough gas or pressure in the system to do much else The oil predominantly most of it near all of it stays in the evaporator the compressor the condenser and the lines so you want to be careful adding oil every time you add freon That's kind of tricky If you're having somebody pull the system down there must be a reason it's not cooling well something's wrong You're just having this done so they can put back a weighted amount of refrigerant just because.? I don't ever do that I have 45ish degree air coming out of the vents on all four of my air conditioning systems and none of them have been evacuated pulled down to negative vacuum sat for any length of time and then been recharged I get a generation two here I hook up the gauges look at the sight glass top everything off to where I do all the time look for my 48 or so degree air coming out of the vents or whatever it is and then somebody's in the car and driving and I don't see it for months or whatever but you can do exactly what you're saying you're going to have done because your friend can do that cool but if you got cool air why?