QUOTE(dr914@autoatlanta.com @ Jan 11 2019, 02:09 PM)
we use a new modern heating element that is bulletproof
What's the amperage draw on these?
I just think it's so inefficient that the default position on these is normally open, such that you have to maintain a constant current draw to keep it closed...and that if the current fails, it fails open. A timer relay to hold open a normally-closed valve for a set amount of time seems a much better idea.
Then again, it's simple, and we are talking late 60s/early 70s technology...and in the end, I doubt it has a significant affect on fuel economy or alternator life.