Ok motor has 300 (total)miles fairly trouble free..3 oil changes with clean oil in and good color out. Temperature is 180-190 consistant and runs without a hitch. I have noticed brown specs in the coolant(new coolant) on the surface..when inspected with a light the coolant does not display the "rainbow" of colors that oil in the coolant shows on the surface, and the coolant itself is perfect in color. My radiator is older and yes has some buildup, but I am curious as to what are signs of coolant contamination. The "specs in the coolant are DARK black and brown, and the size of a pin head. Any assistance would be appreciated. I ASSUME the contaminants are rust and calcium, but I don't like to assume. Last info..Tstat is 180 and new,all hoses are new, coolant is same.
Thanks,
Derek.
Thanks,
Derek.