Fuel sender

Special tools are nice to have if you use them often enough to justify the cost. I would have used a fuel sender wrench 4 times since 1980. The proper tools, line wrenches for example, a must have whether we use them often or not. Anyway... A flat end brass drift and small hammer will remove and reinstall the sender lock ring.
I haven't opened a bottle of Fords friction modifier in a loooong time so I dont know if it still smells worse than a dead skunk or not. If it does, dont spill a drop.