We just finished up putting Corsa on an E55 (first ever) and upgraded the cooling system. We seperated the coolant systems with a pressurized expansion tank under the hood (another first).

Just thought you guys/gals would like to see this and maybe get some ideas or something.

In case anyone is looking at a 4 door MB car, this is the one to get. Stock they are fun and all, but with the mods this car has on it I'd guarantee it would beat 90% of cars on the road from a roll. It's just sick.