I had my Westy changed over to 134R when it had the engine converted to
a 1.9TD (along with the Jetta Diesel A/C compressor).  No one can find
any leaks but I have lost the charge three times.  Is it possible for
the hoses to leak 134R (because of smaller molecule size of 134R) than
won't be picked up by the light which can detect the dye?  The first
charge lasted a few months, the second charge only 4 or 5 days, and the
third charge about a week.

Thanks

Wade Yorke

84' Westy  1.9TD