Wow 11 years and only replaced once. I usually do mine about every 2-3 years and that is stretching it. I've only had good luck with the Ford Motorcraft brand GPR.
doesn't sound to me like you had good luck at all with them...
If it warms up a little more this week, maybe Ill return it and see if I just have a bad one. Otherwise it might just have to stay on as long as it is doing its job. It is working, just loudly...although it is barely noticeable with the hood shut sitting in the cab.