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if the fittings are dry and rust covered, I'd not only soak them in Kroil or Blaster, I'd lightly tap the flats of the nut with a SMALL hammer, top, sides, bottom, etc. then soak again, then let it soak a day, and repeat for at least a week... longer if not in a hurry.
I've never seen dry lines on any of my cars except my 87 TD, unfortunately... EVERY MB I've gotten has had oil leaks that at a minimum lightly coated each and every part on my cars... the only plus side, is the fittings always come right out.
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!
My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!
1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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