I've found the most difficult part to be waiting between adding some.
the tube is so slim, and fluid hangs out so long on the tube. pour in 1/2 pint, wait 20 minutes, check stick, look for fluid all the way across. repeat. if too high, get the mityvac and suck some out, and check again...

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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!