mf7lakes
Full Access Member
I started a discussion about installing a real temp gauge back in 2014 --- it's about 3 pages long -- guys on here know their stuff
https://www.oilburners.net/threads/size-of-these-holes-water-temp-stuff.68054/
https://www.oilburners.net/threads/size-of-these-holes-water-temp-stuff.68054/