Seems like the culprit was a loose shrader(sp?) valve. Tighten it up and put in 2 lbs of R134. one third of a pound stayed in the lines so the system ended up with 1.7 lbs. Cools very nicely now and all is good in the world.

MB dealer did the conversion a few years back. I am friends with the senior tech and the shop manager and I trust them. They have save me tons of money by doing things that others have said they could not do. Wife had a trans valve leak. Everyone said the trans had to be dropped to access it. The senior tech said he was pretty sure he could do it with the trans in the car. He was right ... and the list goes on.

Any way, they did the change over to R134 and I do not notice a difference in cooling. The car can still keep me comfy on a 105 degree TX summer day. R134 is better for the environment and at the time it was less expensive so I have no regrets about the swap.

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2014 C250 21,XXX my new DD ** 2013 GLK 350 18,000 Wife's new DD**

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