I posted this back in January:
I must have posted it on the wrong board since no one replied; so I will try here.
Basically...this scenario still exists. The bummer part is that the engine knock is becoming audible at temperatures above
freezing. The temps in my area dropped to 40-45 over the weekend, and each morning the knock could be heard until the engine warmed up. We do have a block heater (or at least a plug for one). I've never had the ability to plug it in, until now (we bought our first house just last month). I could just keep that plugged in all the time, but it's basically a space heater and I would rather not rack up huge electric charges.
Any thoughts on addressing the knock? I suppose experience with a block heater would be valuable advice too (is it really that expensive in terms of an electric bill? how long does it take to warm the engine block? etc.)