My '81 300SD has been running hotter than normal (now about 95-100 versus 85 historically). On hills, reaching over 100... Thermostat and coolant replaced about a year ago. The radiator is over ten years old, so I plan on biting the bullet and replacing it. In reading thru some threads on the matter, it sounds like an aluminum replacement would be the best option. Anyone have strong opinions, one way or the other? Any brands preferred? Nissens, Behr, etc?

The last time I had it replaced (July of 1999), it was done as an emergency, somewhere off the beaten path in Georgia.... Don't want that to happen to me again...

Thanks in advance for input...

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Mine: 1987 MB 420 SEL - 66K (Dec 2019)
Mine:1991 MB 350SDL - 244K (Aug 2011)- Totalled 9/14/2016
Mine:1981 MB 300SD - 326K mi (July 1997)-sold
Wife's: 2008 MB C300 Sport - 110Kmi (April 2009)