i drained the CLR out last night. noticable improvement just looking inside the radiator.filled it up with water, took it for the same spin i did on sunday, and my water temp was 165. it was 190 on sunday before the flush. both days it was 50 degrees outside. now i have to flush it out real good to get all the CLR out. put the 160 thermastat in and see what happens.
david