Was your 116 "properly" converted to R134a? I know on the VW side of things the expansion valve is different between R12 and R134a. It also helps to change the pressure switch so the radiator fan kicks onto high sooner.

-Jason

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.