Thanks BoiseBenz. I do not know if the gauge is reliable but it did hover just past 80. Also non green coolant was used. Thank you for telling me that the 300D Wagon has no turbo as it is not really worth my while then. I still have to see the wagon.

Always an NM car so I am lucky about the rust factor. But for no rust we pay for faded paint jobs because of the intense sun at high altitudes.

For AC is it better to convert to R134 or just refill with R12?

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Stuck on older cars
1983 W123 Sedan 300D Diesel Federal