Hi, earlier I took my CLK55 AMG for a spin but when I got back I noticed there was a greenish watery puddle on the garage floor underneath where the engine/radiator normally is parked..

I'm not sure what the overheating level is but the temperature gauge is slightly below the 3/4 mark. It's not too close to the red mark and I'm not sure if that's where it is normally at.

My question.. How do I check if there's coolant inside my radiator?? I checked the resevoir and it's full. When I shut the car off earlier the fluid must of been real hot because it was steaming.

I looked underneath the car while it was parked else where and I see no signs of a leak! It's not dripping from underneath or anything.. But I guess it could also be because the radiator may have already drained itself out??

Overheating is over 120C.

Look at the expansion tank, it should be filled to the top of the clear part of the tank. That is, the level should be at the point where the clear part and black part of the tank joins.

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Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record