Dunno what's up. I changed the oil ((have not changed the oil filter yet, though)) using Mobil 1 tri-synthetic 10w30.

It will run above normal without the A/C, and when the A/C is turned on, zoom! up the temp goes.

I used a topsider to remove the oil. It only pulled about 7 quarts out and when I refilled it, it was just to the max mark on the dipstick, so I sucked some out...now it's about 3/4 of the way up between the min and max.

And, to top it all off, the Check Engine light has come on

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1994 C280 204k miles