Greetings.

My car '90 300D om602.962 has the stock A/C unit. The PO converted to 134a. The job seems to have been correctly and the car cools well up to 90 or so unless the radiant is very bad.

Here's the question.

I'm thinking about having my A/C friend 'suck' the 134a with his reclamation machine. I don't know how perfect a vacuum these systems obtain but let's assume it gets down to 5" Hg.

Is the oil 'sucked' out as well with these machines?

If I was going to put 134a back in would I need to add oil?

How is all of the oil removed from the system?

Thanks.

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