Automotive Air Conditioning Information Forum

First post!

I got a customer with a leaking condenser in a Hyundai Santa Fe 2006. Problem is that it has been open to atmosphere for almost 2 years now. I will of course run a series of vacuum pulls and brake with nitrogen but will the new dryer take care of what's in the PAG oil? What would you do? Will it be a good thing to do a second dryer change short after? Or do I have to drain the system from oil completely and put new in it?

Short answer, yes. Remove compressor and change the oil. Also flush the entire system.

That's the proper way to do it but money is limited so I might try to get away with a dryer change and new refrigerant charge after some days. Is that plain stupid? Removing the compressor is alot more work but on the other hand it could kill it if I don't...

Slapping a charge in a system that has been open for years may work for long enough to sell the car - but it just sends the problem down the road.

PAG oils can hold on to water:

http://www.autoacforum.com/messageview. ... adid=17571

Flush the compressor with fresh oil. Flush the system. Get all of the flushing agent out.