I use a hot water heater element which has 1 inch BSP threads. The heating elements I used were 240v up to 4,500 watts and could only be plugged in whIle coolant was circulating. May not be an option for you.
This would start melting ice off the windshield in 90 seconds rather than 5 minutes.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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