Alright this one is a bit odd; I did a search and similar information repeatdly came up. Basically if there is pressure on the coolant hoses overnight then you're looking at a bad head or head gasket. Beyond that I also read about oil in the coolant pointing to a similar situation.

Now that is what I read but this is whats happening.

If i'm cruising on the highway at 65 and accelerate to say 75 the coolant light will pop on for a few seconds until I hold steady at one speed (Even at 75 the light will turn off and the temperature will remain stable) When I get to my destination the coolant line from the radiator to the engine is hard. I did a test on this and checked the hose every few hours once I got home today (3:30) It was hard then but continued to soften over time and less than 6 hours later it was completly soft again. I do not see any oil in the coolant. I'm really not sure what is going on but I hope I didn't damage the head/head gasket a few months back ago when I had that radiator incident.....

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1982 300GD Carmine Red (DB3535) Cabriolet Parting Out
1990 300SEL Smoke Silver (Parting out)
1991 350SDL Blackberry Metallic (481)

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