Date: Mon, 05 Sep 2005 18:02:32 GMT From: "James Sweet" <jamessweetnospamail.com> Subject: Re: C900 A/C charge
> > Is there a way to tell, ignoring the presence or absence of labels/stickers > around the engine bay, what type of refridgerant is inside the A/C system? > My 1985 900i doesn't have any stickers or labels saying it's been refilled > with R134a but the compressor's spec plate says it's designed for R12. That > could mean that the system still has R12 but then again it might not. Once I > get the car running enough to renew it's rego and insurance after 2 years > without any, I'll look at getting an A/C tech to explore the A/C system and > figure out if it needs re-filling, etc. > You can evacuate some of the old refrigerant into a tank of some sort so that there's enough that some is in it's liquid state, then measure the pressure and generally get a good idea of what the substance is. If it's R-12 then it has value, if it's some other concoction you pretty much have to just throw it away.