never heard of sillas radiators...
a year or so ago I bought a Ready-Rad to replace my oem unit. that ready-rad lasted 5 months and then broke again. I managed to get my money back from O'Reilly on the piece of junk and ordered a Visteon from RockAuto. Supposedly Visteon is the oem maker for Ford. I compared it to the oem...looked pretty much the same. I figure if the oem lasted 11 years, the Visteon should last a while.