Please foregive the redundancy here, but my search of the archives did not answer my question:

How much and where do I put oil in a vacated ac system with new compressor? 1981 300D with R4 compressor.

My guru is suggesting a bunch in the compressor (then turn by hand 12 times) and some in the receiver-drier. He also says to use ester oil as this is going from R12 to R134a. Doesn't seem to know anything more specific for an old MB.

So, after reading the archives, I am only more in doubt: one thing in consensus seems to be that adding too much is bad. But i am not clear on what is too much.

The gist of what I've read seems to suggest 4 oz in the compressor and 4 oz in the receiver drier. Does that sound right?

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Erlend
1981 300D 202K daily driver