I actually have a video borescope, so I will look inside the radiator via the upper and lower hose connections.
While I have the t-stat out, I will try and see how the water pump looks.
As for the price of the radiator.....try $829 and that is from our host. This radiator is all metal and is huge.

Has anyone had any luck with those cooling system cleaners?

Thanks for the tips/ideas on what to look at.

__________________
1999 MB SL500 (110,000 mi)
2004 Volvo V70 2.5T (220,000 mi)
2014 Tesla Model S 85 (136,000 mi)
MBCA member