I bought BG Frigi Quiet a few days ago planning on using it when I converted my 85 380SE to R134. I have completely flushed the system out (with the evaporator in place,......through the lines at the expansion valve) and will be replacing the compressor, drier and expansion valve (drier last just prior to vacuuming the system down).

In the past few days, I have received a number or emails from the mercedes list stating that I would be better off to stay with R12,..particularly since I live in Texas.

So, I am considering either R12, or the Freeze 12 that I already have.

The Frigi Quiet compressor oil says that it is fully compatible with all types of A/C compressr oils, but,.......that it should only be used to top off R12 systems,...........NOT as the exclusive lubricant. Has anyone tried this as the exclusive lubricant in an R12 System? Any idea why BG says it should NOT be used as the only lubricant in an R12 System?

Brian in Austin