I picked up the Fuel pressure regulator from the store and installed it this weekend with no problems. It didn't come with instructions, but It came already assembled with the lines and fittings already torqued down. Do I need to use any type of thread locker or sealant on those threaded lines? The pieces specifically I am curious about is the silver push to lock male fitting on the return line from the filter to the regulator and the push to lock blue female fitting attached to the return line going into the tank. There are also the two threaded connection on the regulator.
I test fired it up after assembly and there are no leaks and the system works great, but wanted to make sure they are safe and stay without leaks.