I am pretty mechanical and don't shy away from most mechanical problems. Between A/C systems and automatic transmissions, it's vu du magic. I don't have the bandwidth to learn new systems and their intricacies. I might just keep charging it with a can of R12 every year until it gets worse.

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1981 240D auto
1977 240D manual 300 Turbo swap
1983 300SD
1983 300TD Parts car