Skip the auto shop - Our mechanics make house calls

Q: Green AC oil coming out of the condensation line after recharge

asked by on

AC was blowing warm, hooked up a can of refrigerant, psi read 15psi, charged with compressor engaged to around 40psi. Air then was cold. came out 15 min later green slime all down frame and on ground. No visible leak at fire wall , no visible leaks anywhere else but out of drip tube. Recharged a day later after 10 min drip becomes green and psi slowly drops. Evaporator? ORINGS? any help is greatly appreciated.

My car has 70000 miles.
My car has an automatic transmission.

If you are seeing the green oil dye coming out of the A/C evaporator drain tube then you most likely have a leaking evaporator or expansion valve on the evaporator. The green dye can be seen using yellow glasses and a black light.

You can have the refrigerant reclaimed and remove evaporator. Use a black light and yellow lens glasses to find the leak on evaporator. Before you do this, I’d also suggest using the light and glasses to look over the entire system to see if there are any other leaks present. Make sure to check compressor and condenser good.

If you need some help with these checks consider enlisting a certified mechanic, such as one from YourMechanic. They will be able to help you diagnose the source of the leak and make the necessary repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Green AC oil coming out of the condensation line after recharge

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: What's the cost for replacing cv joint on 2005 mercury mountaineer

Billing question sent to CS for the cost of replacing the Constant Velocity Shaft.

Q: Why do I smell oil and about how much will it cost to repair it?

Hello Diana. If you still have the service documents from the dealership a technician will be able to tell you if the leaks are new or a recurring issue. Mini Coopers will usually have a leak around the oil pan...

Q: Bad frame rot, is it worth the repair?

Greetings and thank you for writing in about this problem! This is a well-known concern for this generation of Tacoma. Toyota is well aware of the issue and has provided a recall for this concern (TSB LSC-90D). The original recall...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...