Sending Unit = Switch ?

[Hawkrod]

I use plumbers Teflon tape.

Tape is the worst thing you can use. The manufacturers will specifically tell you not to use it on electrical sensors because it can insulate the sensor and cause eroneous readings. Always use a liquid sealer that will allow metal to metal contacts between the sender and the hole it is installed in. Hawkrod

From Stewart Warner:
http://www.sw-performance.com/upload/B- ... 0Gauge.pdf
"Sender is grounded through its threads to the engine. DO NOT
use sealing tape on threads."

[Racer Z]

I use plumbers Teflon tape.

Tape is the worst thing you can use. The manufacturers will specifically tell you not to use it on electrical sensors because it can insulate the sensor and cause eroneous readings. Always use a liquid sealer that will allow metal to metal contacts between the sender and the hole it is installed in. Hawkrod

From Stewart Warner:
http://www.sw-performance.com/upload/B- ... 0Gauge.pdf
"Sender is grounded through its threads to the engine. DO NOT
use sealing tape on threads."

Understood now. Do you mean something like this:
http://www.permatex.com/products/Automo ... ealant.htm

[fordman]

Thanks for all the feedback.

What kind of conductive sealant do you guys like using on these guys?

teflon paste sealant. not tape.

[pelesl]

Understood now. Do you mean something like this:
http://www.permatex.com/products/Automo ... ealant.htm

Sounds like that's a good one. Says it's good for oil sensors, so I'm sure it'll be fine for coolant (which I guess falls under "intake manifold switches), too. PTFE is the generic name for Teflon.