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Oldyeller, the temp sending units i have used actually have smaller threads than the fittings, so there is no way to get them tight. The instruction manuals for the guages also reccomendd using teflon sealent of some kind.
BTW, those have both been on mechanical guages. With a electrical guage, it may be different.
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'72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride.
'70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck.
'97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg
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