All the solutions discussed here have been R12 to R134. What about the two "alternatives" to R12 that were posted in the first post that are supposed to be 100% compatible.
I also notice they both say "vacuum system out. Dont charge under vacuum!" How does one go about not charging under vacuum? Certainly you dont relieve the vacuum with air...
2003 Jetta Wagon TDI 145,000MI
1999.5 Jetta TDI 287,000MI
2001 Suzuki SV650S 26,000MI
2008 Yamaha Vino 125 11,000MI