Just changed my evaporator core. 5 hr. job. Thanks to the good people on this site who posted information, very helpful. Now looking for the proper refilling procedure and how much 134A to add? Also wondering about adding oil to the system. Do I need to vacuum the lines before adding the freon?

 

yes you must vacuum the system before adding freon. as for oil, I didn't add any to mine when I changed the evaporator. did you also change the accumulator.

-dkenny