I have a 92 300D with a hole in the evaporator. I charged it up with R134 in December and it blew cold through August. My question: Am I safe to let it go until it gets hot again (April here in Texas!) or is it advisable to keep it charged throughout the winter to prevent moisture from getting into the system?

Thanks.

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 158k miles
06 E320 CDI "Rutherford", Black on Tan, 177k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 144k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 72k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife