I got as set of isspro's and before i install them I have a question. On the fuel pressure gauge what type of thread sealant can I use on the fitting threads that is compatible for diesel fuel. I have that white thread tape that home depot sells but is that ok to use with diesel fuel?

 

Thats what I usually use and haven't had any issues.

 

that will work fine

 

I used liquid teflon which is pretty much the same thing.