After evacuating my new system on an old 1974 car (new everything except evaporator which was flushed and tested fine), I ran into trouble charging the system. The system held full vacuum flawlessly. I attached the R134a to my manifold gauges, purged the air out of the yellow line, closed the can an...

Hi All and thank you! I am revamping an old 1974 car's A/C system and will be using flare fittings at the two evaporator connections. I am confused as to whether I am supposed to use a copper washer in each. All fittings are new except the evaporator female fitting for the compressor hose and it loo...

Very interesting and very helpful. Much appreciated! Come over this weekend, lol.

Thanks so much! Anti-seize on the threads and is Nylog Blue good for the flare contact surface itself? I hear you need to tighten them up, extra tight, correct? Thanks so much bohica2xo!

Hi and thanks for having me. I am renovating an A/C system in an old 1974 vehicle. I have updated the compressor and condenser, am making new hoses and using aluminum headlock fittings. All fittings will use o rings except my connections at the ancient but excellent condition evaporator. Those two t...