To add to what the others said, I don't think a drop over a period of minutes on a vacuum test is a huge issue. When I use the MityVac I give it 10-20 seconds tops....

Or is someone going to tell me I'm wrong ?

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Mac
2002 e320 4matic estate│1985 300d│1980 300td
Previous: 1979 & 1982 & 1983 300sd │ 1982 240d

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