PB Blaster Lubricant
I can't recall the gentleman's name but I had to post a note to thank him for saving me some money. Both my black and gray water valves had become very, very hard to pull out to dump the tanks so I a...
Forum Discussion
blw2 wrote:
WD is also not a very good penetrator....
But my question re. this trhead....
Don't thse knife valves have some sort of elastomer (rubber) seal?
I wonder if it is solvent friendly?
I wondered about that, too, so I use silicone spray. I hit my plastic, hard to rotate, fresh water tank drain valve while I'm under there.
A very inexpensive and highly effective penetrating oil is a 50/50 mix of automatic transmission fluid and acetone. A vinegar-dressing squeeze bottle or mustard bottle work well as a delivery device.
