My 2000 coupe A/C was blowing a little warm today and since I have never serviced it I decided to add a little 134. A/C systems will tend to lose a little R over the years because of all the seals and hose connections. Anyway picked up a can with a trigger hose attached but they were out of the pressure gages. I attached the quick connect to low side fitting and put in about 1/2 can (5 oz) make sure you hold can upright and shake a little so it fills as a gas. Warning: if you invert can to speed up by liquid fill you can damage the compressor. I ran the engine a few minutes felt the line up by the firewall and sure enough the temp felt like a soda pop just out of the machine. Vents blow about 48F at speed. Yea! cool again for $12.00.