what thread sealer should i use on the threads of the schrader valve adapter and the threads on the fuel pressure sender that hooks into the adapter? the little instructions from autometer said to use "fuel safe" but i've never heard of fuel safe sealer, is this something that is at auto zone? or what sealer do i need?

should i just put it on the sender threads only? and not worry about the little schrader valve adapter that screws on?

 

i thought the threads were tapered no?

 

they are but it said to still use some sealer on them.....