Best lube for grey tank and black tank valves

LarryJM wrote:

Lwiddis wrote:
Since I now know it’s an issue...40 years after my first TC...I’ll lube them religiously.

Same here, but it's only been 36 years for me not lubing any valves.

Larry

Maybe you’re lucky or maybe your diet includes enough natural lube, I haven’t lubed my 11 year old truck camper valves either but the black one is super tough to pull and you have to pull it straight up while reaching in to the compartment so you can’t get any leverage. A couple of times I nearly gave up. I didn’t know they had jugs of lubricant until this thread. I’ve used a little laundry soap in the past but it didn’t seem to last.
Scoff all you want. I’d welcome you to pull my black dump handle.