Hi I'm new to this one of my friends has a 2005 crossfire auto,I've fitted 3 radiators in it in the last 4 years and the company supplying them has always replaced them under warranty.I'm wanting to know if anyone else has had a similar problem and what if anything they found.

 

very unusual , the only thing i can think of is You are using the wrong coolent. these cars like all Mercedes must use
mercedes coolent.,,, don't beleave me read below or google ,type coolent to use in older mercedes
or just replace the rad every 4 to 6 years

https://www.mbca.org/sites/default/f...reedec04_0.pdf


https://www.googleadservices.com/pag...9aACCFI&adurl=

 

I am sure that most people here have used Zerex G-05 and not the Mercedes equivalent. Radiators are used with different types of coolant at different ratios so I doubt that a radiator would fail due to the coolant that was used. Zerex and similar coolants are used because of the engine block material. Using the wrong coolant in our engine could in the long run harm the engine.