THanks for clearing that up Mike.
Ok, I will do the test tomorrow. I will do it while the engine temp is normal, about 87 C. I think I will try using my climate control to get the temp of the AC first. If for some reason I can't get it, then I will get a thermometer.
Nice little feature to have all of the data read out of the climate control when I need it!! Thanks everyone for the help.
(Still anyone know where the freon glass is in C280?)
2006 E350 w/ 155k miles (Daily Driver)
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)