Hi,

our Lumina have things in the Cooling water, its like white mud.
Is that normal? The last change was couple of years ago...
Oh before I change the water it was blue now we add red one...

We did change the water but its coming back, can it be that was the rest?

http://img89.imageshack.us/img89/7640/dsc00158sz1.jpg

http://img89.imageshack.us/img89/3796/dsc00159tf7.jpg

http://img89.imageshack.us/img89/5310/dsc00160bs4.jpg

is it thick and slimy? if so, it is oil.white-tan is usually motor oil,pink is ATF. with any luck it's just an oil cooler in the radiator and not a head or intake gasket.

Its beige not brown or pink, its not thick, i cant touch it... The oil looks like new, and we didnt have a leak, we didnt lost something.

http://img227.imageshack.us/img227/7131/dsc00162kn4.jpg

http://img137.imageshack.us/img137/25/dsc00161wa5.jpg

http://img227.imageshack.us/img227/4149/dsc00163ul1.jpg

i would take it out and clean it. see if it does it again. it may be something simple. maybe some kind of residue created from back pressure...