Originally Posted by 540guy
When my system blew it was the radiator and associated hoses. I floored it from a green light to beat traffic from the light since my lane was ending,
You may want to have a look at your left motor mount when that comes apart from the torque it lifts and tugs hard on the hoses and rad during hard acceleration.
The E38 does have some of the same cooling system problems but the hoses are longer so probable has less rad neck breakage than the E39.