For the life of me I can't get the washer hose off its faucet. I have the right tools, know the righty tighty lefty loosey thing, but it's just not coming off. I've banged on it a bit, tried to squeeze as tight as I can without crushing the threads, but I feel if I give it anymore torque it's just a break waiting to happen.\n\nI've been holding off on using the PB blaster, (penetrating oil); there's bound to be a bit left over on the threads that won't come off. Is this little amount anything to worry about? I'm installing a Y fitting to split off the washer connection for the RODI. \n\nI know the whole purpose of the RODI is to filter the water, but I just want to make sure, since a little oil goes a long way. In the meantime I've just been buying distilled water and the premixed stuff, which is a pain in the ass and waste of money.\n\nThoughts?