I got the oem one for my honda. They have a block drain plug inaddition to the plug to screw in the heater. It took a 3ft breaker bar and 2 guys to pop it loose.
2 hours in freezing temperatures and my sg2 reads 97-100 degrees. I get heat within 2 minutes of running and the cold engine logo turns off.
I use a 50 ft 10 gauge cord with 3 outlets on it from harbor freight. I then use a outdoor water proof timer from walmart for the heater. I use the other plug for my PHEV kit.
