About a month ago I was in town and rolled the windows down. I smelled antifreeze and someone pulled up next to me and said you're leaking coolant. My coolant jug was overflowing, but my dash gauge was spot on. I got it to a nearby Wal Mart where I could buy supplies and rent a car nearby.
I rented a car and drove back home to get tools. The top of the radiator had a lot of crap in it, but when I removed the thermostat, everything looked fine. I changed the thermostat, refilled, and drove home. I flushed the cooling system repeatedly to get rid of any crap that had come loose. Now what happens is that my coolant expansion tank gets dirty coolant in it, but when I remove the radiator cap, I see green coolant. The expansion tank is at regular atmospheric pressure and connects to the radiator right by the tank. I would expect ALL the coolant to look the same color. That's not what's happening. The hose between the radiator and expansion tank has been changed and the expansion tank is clean. I don't think it is something to be concerned about, as it doesn't affect the operability of the vehicle, but I don't understand why the coolant seems to separate. I am wondering if the dirtier coolant is somehow "lighter" or "less dense" and somehow floats to the top and expands out to the expansion tank, whereas the green coolant stays in the system.... Any thoughts? _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
