PeachParts Mercedes-Benz Forum - View Single Post

LUVMBDiesels · #11 07-22-2008, 07:22 PM

I used liquid Tide when I did mine.

I did a quick flush with citric acid ~60 minutes and when I saw the amount of gunk that came out did another one. That one I left for a week, driving with just the acid/water mixture. when I flushed it again the water looked like red mud. I did all my flushes with the thermostat out and the wires to the monovale disconnected. I did use my hose setup to back flush each time. I would fill with water from the block drain run the car flush so that water was coming out of the expansion tank for 15 minutes, with the thermostat in the car the constant running of cold hose water would keep the t-stat closed. This is why I removed it.

After 15 minutes I would shut off the hose, disconnect it from the block drain and also pull the lower radiator hose to drain the rad.