Re: [MBZ] another eBay OM60x head case

[Peter Frederick]

If you ever have the system open for service, you should replace ALL 
the o-rings.  This is mandatory if you switch to 134a, as the older 
ones usually go pretty fast.

Another "steath" leak is the o-rings that seal the piping manifold to 
the compressor -- the high side ones erode and start to leak, usually 
looks like a leaking compressor body.  Ditto for the hose to compressor 
manifold 0-rings.

Peter