Had one in my genI V6. Seemed to work okay, but not nearly as well (IMHO) as the frostplug style I put in afterwards - just seemed to reach OpTemp faster with the block heater. When I got the diesel, I bit the bullet and stuck a frost plug heater in. Starts on a -20* day just like it does summertime.


1991 HZJ77, 1999 KZJ90, 1999 UZJ100, 1992 M101CDN2
https://www.thegearheadproject.com/category/jdm-journeys/