Thanks for the responses.

It was weird. When I first started out, I figured time for an AC recharge. By the end of the drive I wasn't so sure.

Where is the mono valve located?

Haasman

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'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)